Iron Element Atomic Model

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Iron Fe (Element) PubChem

5 hours ago Pubchem.ncbi.nlm.nih.gov Show details

Iron is the cheapest and one of the most abundant of all metals, comprising nearly 5.6% of the earth's crust and nearly all of the earth's core. Iron is primarily obtained from the minerals hematite (Fe 2 O 3) and magnetite (Fe 3 O 4 ). The minerals taconite, limonite (FeO (OH)·nH 2 O) and siderite (FeCO 3) are other important sources.

Atomic Mass: 55.84 u
Oxidation States: +3, +2
Electron Configuration: [Ar]4s23d6
Year Discovered: Ancient

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Category: Iron element atomic model

Elemental Analysis Manual Section 4

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Elemental Analysis Manual for Food and Related Products. 4.4 Inductively Coupled Plasma-Atomic Emission Spectrometric Determination of Elements in Food Using Microwave

Author: FDA/CFSAN/ORS/DBC/CHCB
Keywords: Food Analysis Elements
Created Date: 12/29/2015 11:38:18 AM
Title: Elemental Analysis Manual-Section 4.4

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Category: 21 element atomic model

Chapter 3: Crystallographic directions and planes

2 hours ago Courses.washington.edu Show details

Planar Density of (100) Iron Solution: At T < 912°C iron has the BCC structure. (100) Radius of iron R = 0.1241 nm R 3 4 3 a = Adapted from Fig. 3.2(c), Callister 7e. 2D repeat unit Planar Density = = a2 1 atoms 2D repeat unit = nm2 atoms 12.1 m2 atoms = 1.2 x 1019 1 2 R 3 area 4 3 2D repeat unit

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Category: calcium element atomic model

Chapter 7 Electron Configuration and the Periodic Table

5 hours ago Www1.udel.edu Show details

–Grouped elements (66) according to properties –Predicted properties for elements not yet discovered –Though a good model, Mendeleev could not explain inconsistencies, for instance, all elements were not in order according to atomic mass

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A Periodic Table of the Elements at Los Alamos National

5 hours ago Depts.washington.edu Show details

Atomic Number: 1 Atomic Symbol: H Atomic Weight: 1.0079 Electron Configuration: 1s1 History (Gr. hydro, water, and genes, forming) Hydrogen was prepared many years before it was recognized as a distinct substance by Cavendish in 1776. Named by Lavoisier, hydrogen is the most abundant of all elements in the universe. The heavier elements

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Iron Element information, properties and uses Periodic

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The atomic number of each element increases by one, reading from left to right. Block Elements are organised into blocks by the orbital type in which the outer electrons are found. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), …

Discovery date: approx 3500BC

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Chapter 27 – Magnetic Field and Magnetic Forces

8 hours ago Physics.ucf.edu Show details

atomic magnetic moment. - In unmagnetized Fe piece no overall alignment of µof atoms total µ= 0. - Iron bar magnet magnetic moments of many atoms are parallel total µ≠0. - A bar magnet tends to align to B, so that line from S to N is in direction of B.

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Chapter 9: Atomic Absorption Spectrometry

6 hours ago Www2.chemistry.msu.edu Show details

Cathode material made of the element of interest, e.g. Na HCL for the analysis of Na. An individual lamp is needed for each element. So AAS is a one-element-at-a-time measurement! atomic emission graphite furnace self-absorption . atomic fluorescence hollow cathode lamp spectral interference .

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The Atom for Middle School Miss Little's Classroom Website

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2. The Atomic Model Worksheet and Key 3. The Atomic Model of Matter Graphic Organizer and key 4. Atomic Model of Matter Worksheet and key 5. Atom Notes 6. Complete Model of Atom Graphic Organizer and Key 7. Vocabulary Review and Key 8. Periodic Table 9. Understanding the Atom – Finding Numbers of Protons, Neutrons, Electrons and Key 10.

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Free User Manuals By Brands ManualsOnline.com

6 hours ago Manualsonline.com Show details

Manuals and free owners instruction pdf guides. Find the user manual and the help you need for the products you own at ManualsOnline.

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Iron Periodic Table of Elements

1 hours ago Periodic-table.org Show details

Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.

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ELEMENTS by ICP 7301 (Aqua Regia Ashing)

3 hours ago Cdc.gov Show details

ELEMENTS by ICP (Aqua Regia Ashing): MET HOD 7301, Issue 1, dated 15 M arch 2003 - Page 4 of 8 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition [5] NIOSH [1994]. Lead by FAAS: Method 7082. In: Eller PM, Cassinelli ME, eds., NIOSH Manual of Analy tical Methods, 4th ed. Cincinnati, OH: U.S. Department of Health and Human Services, Centers

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1. ATOMIC STRUCTURE FUNDAMENTALS

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To the left of the symbol we find the atomic mass (A) at the upper corner, and the atomic number (Z) at the lower corner. Examples: 1H 1 C 12 6 Na 23 11 A Symbol Z Electron trade constitutes the currency of chemical reactions. The number of electrons in a neutral atom (that is, the atomic number) gives the element its unique identity.

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The Element Iron Iron Atom

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Iron is a chemical element in the periodic table that has the symbol Fe and atomic number 26. Iron is group 8 and period 4 metal. Notable characteristics. A typical iron atom has 56 times the mass of a typical hydrogen atom. Iron is the most abundant metal, and is believed to be the tenth most abundant element, in the universe.

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A Simple FaultFinding Guide for Flame Atomic Absorption

7 hours ago Agilent.com Show details

Light the flame according to the operation manual, and aspi-rate a standard solution of the analyte element which will give an absorbance of between 0.1 and 0.8. Now carry out the following sequence: 1. Carefully adjust the burner position rotationally and hori-zontally (not vertically) to achieve the maximum absorbance. 2.

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Guidelines for Troubleshooting and Maintenance of AA Systems

3 hours ago Agilent.com Show details

Agilent’s Atomic Spectroscopy Portfolio - Features Lowest price • Single element • DLs typically ~100’s ppb • Fast (for 1 element) • Good elemental coverage • Low running cost Lowest running cost • Multi element • DLs typically single to 10’s ppb • Faster • Broader elemental coverage • …

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CHAPTER 4 ATOMIC STRUCTURE AND BONDING

8 hours ago Web.nuu.edu.tw Show details

2. identical valence of the elements; 3. similar electronegativities; 4. common crystal structure of the elements. 4.19 Using the data in the following table, predict the relative degree of solid solubility of the following elements in aluminum: (a) copper (c) magnesium (e) silicon (b) manganese (d) zinc

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Iron Atomic Number Fe Periodic Table of Elements

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Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.

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EXPERIMENT 7 Spectrophotometric Iron Analysis

8 hours ago Alpha.chem.umb.edu Show details

for iron (Fe3+) at a very low concentration. Fe3+ is only weakly colored to visible light and in dilute solution appears colorless. However, 2, 2'-dipyridine (which we will symbolize as dipy) forms an intensely colored complex with Fe2+. We will take advantage of this by adding an

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Guidelines for Chemical Analysis: Determination of the

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method for quantifying the dissolved elements barium, calcium, cadmium, iron, potassium, magnesium, manganese, phosphorus, sulphur and zinc in digests of plant and animal sample material. The can also be used for determining the content of other elements detectable by means of ICP-OES in biological and environmental samples.

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Xray Lab, Room 117 Stanford University

2 hours ago Web.stanford.edu Show details

with elements in the range Titanium (Ti) (atomic No. = 22) to approx. Zinc (Zn) (atomic No. = 30) Cobalt (Co) 27 Often used with ferrous samples, the Iron (Fe) fluorescence radiation would cause interference and cannot be eliminated by other measures. Iron (Fe) …

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Atomic Data for Iron (Fe)

1 hours ago Physics.nist.gov Show details

Fe I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 5 D 4 Ionization energy 63737 cm-1 (7.9024 eV) Ref. SC85 Fe II Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 6 D 9 / 2 Ionization energy 130563 cm-1 (16.1877 eV) Ref. SC85-1 (16.1877 eV) Ref. SC85

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TRENDS OF CHEMICAL AND PHYSICAL PROPERTIES IN …

3 hours ago Eprints.undip.ac.id Show details

Trends in Atomic Size All physical and chemical behavior of the elements is based ultimately on the electron configurations of their atom Sometimes atomic size is defined in terms of how closely one atom lies next to another. Because atoms do not have hard surfaces, the size of an atom in a compound depends somewhat on the atoms near it.

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Analytical Methods for Atomic Absorption Spectroscopy

3 hours ago Www1.lasalle.edu Show details

All modern Perkin-Elmer atomic absorption instruments are capable of measuring both atomic absorption and atomic emission. It is important for the operator to understand the processes that occur in each technique. Every element has a specific number of electrons associated with its nucleus. The normal and most stable orbital configuration of an

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Fundamentals of the Heat Treating of Steel

8 hours ago Asminternational.org Show details

commercially pure iron, subsequently leading to discussion of the iron-carbon alloy system that is the basis for all steels and their heat treatment. All pure metals, as well as alloys, have individual constitutional or phase diagrams. As a rule, percentages of two principal elements are

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Iron (Fe) Melting Point, Atomic Mass & Number, Chemical

3 hours ago Byjus.com Show details

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Metals Analysis

1 hours ago Cdnmedia.eurofins.com Show details

elements simultaneously to very low detection limits (p pm to ppb). Other metals analysing equipment used in other labs that we no longer operate include: Cold Vapour Atomic Absorption Analyser Cold Vapour Atomic Absorption spectrometry is used to analyse mercury and operates by reducing the element to the gaseous state, then passing it

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ATOMIC FOUR Westerbeke

2 hours ago Westerbeke.com Show details

Universal Atomic ••• there is no other. ~",TANOARD EQUIPMENT Propeller coupling •. hand sump pump, U.S.C.G. approved ( 'e arrestor, lifting ring. water pump, electric fuel pump, oil level \ ·ge~ crankcase breather, built-in reversing gear, automatic temperature control, ,ruction manual. threaded exhaust flange, and shifting lever.

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Atomic Absorption Spectrometry (AAS)

1 hours ago Cdn.intechopen.com Show details

Atomic Absorption Spectrometry (AAS) is a te chnique for measuring qu antities of chemical elements present in environmental samples by measuring the absorbed radiation by the chemical element of interest. This is done by reading the spectra produced when the sample is excited by radiation.

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Shimadzu Atomic Absorption Spectrophotometers

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Effective for elements that readily form carbides (Ni, Fe, Cu, Ca, Ti, Si, V, Mo, etc.). Restricts chemical interference due to coexisting substances. Effective for the analysis of environmental samples and biosamples, such as sea water and industrial waste. Can be used for all elements. Especially effective for low-boiling point elements

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Chap 2 Solns

7 hours ago Files.book4me.xyz Show details

2.2 Chromium has four naturally-occurring isotopes: 4.34% of 50Cr, with an atomic weight of 49.9460 amu, 83.79% of 52Cr, with an atomic weight of 51.9405 amu, 9.50% of 53Cr, with an atomic weight of 52.9407 amu, and 2.37% of 54Cr, with an atomic weight of 53.9389 amu.On the basis of these data, confirm that the average atomic weight of Cr is 51.9963 amu.

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METHOD 7010 GRAPHITE FURNACE ATOMIC ABSORPTION

9 hours ago Epa.gov Show details

4.11 Spectral interference can occur when an absorbing wavelength of an element present in the sample, but not being determined, falls within the width of the absorption line of the element of interest. The results of the determination will then be erroneously high, due to the contribution of the interfering element to the atomic absorption signal.

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Iron Atom an overview ScienceDirect Topics

8 hours ago Sciencedirect.com Show details

The iron atom is situated towards the end of the first transition series with an electron configuration Ar3d6 4s 2. The neighboring elements with larger atomic number than iron (Co, Ni, Cu) crystallize in close-packed structures until the 3d states are filled in Cu. The transition elements with less-filled 3d states (β-Ti, V, Cr, δ-Mn) have a

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Xray Diffraction (XRD)

3 hours ago Web.pdx.edu Show details

The variable d is the distance between atomic layers in a crystal, and the variable lambda λ is the wavelength of the incident X-ray beam; n is an integer. This observation is an example of X-ray wave interference (Roentgenstrahlinterferenzen), commonly known as X-ray diffraction (XRD), and was direct evidence for the periodic atomic

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CHAPTER 3: CRYSTAL STRUCTURES & PROPERTIES

8 hours ago Srjcstaff.santarosa.edu Show details

Elements at 20C Element Aluminum Argon Barium Beryllium Boron Bromine Cadmium Calcium Carbon Cesium Chlorine Chromium Cobalt Copper Flourine Gallium Germanium Gold Helium Hydrogen Crystal Structure FCC BCC HCP Rhomb HCP FCC BCC BCC HCP FCC Ortho. Dia. cubic FCC Atomic radius (nm) Symbol (amu) (g/cm3) Adapted from Table, "Charac- teristics of

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METHOD 7000B FLAME ATOMIC ABSORPTION …

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4.6 Spectral interference can occur when an absorbing wavelength of an element present in the sample, but not being determined, falls within the width of the absorption line of the element of interest. The results of the determination will then be erroneously high, due to the contribution of the interfering element to the atomic absorption signal.

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(PDF) Atomic Absorption Spectroscopy Dr. Kalsoom Saleem

4 hours ago Academia.edu Show details

Atomic absorption is a very common technique for detecting metals and metalloids in environmental samples. When a solution containing metallic species are introduced into a flame, the vapor of metallic species will be obtained. Some of the metal atoms may be raised to higher energy level and emit characteristic radiation.

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Iron Element History, Uses, Facts, Physical & Chemical

2 hours ago Periodic-table.com Show details

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La Salle University

3 hours ago Lasalle.edu Show details

La Salle University

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An Introduction to Mass Spectrometry

3 hours ago Science.widener.edu Show details

atomic mass (u) and the elementary charge units ( e) are used for these values. The unified atomic mass is defined as 1/12 the mass of an atom of C. Older terms still in use but not 12 accepted as SI units include the atomic mass unit (amu) and the dalton (Da). The amu is no longer acceptable because there are conflicting defin itions.

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Aluminum and Aluminum Alloys NIST

4 hours ago Materialsdata.nist.gov Show details

†1xx.x: Controlled unalloyed (pure) compositions, especially for rotor manufacture †2xx.x: Alloys in which copper is the principal alloying element. Other alloying elements may be specified. †3xx.x: Alloys in which silicon is the principal alloying element. The other alloying elements such as copper and magnesium are specified. The 3xx.x series comprises nearly 90% of all shaped castings

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Inductively Coupled PlasmaAtomic Emission Spectroscopy

8 hours ago Ocf.berkeley.edu Show details

1 Theory ICP-AES, or Inductively Coupled Plasma-Atomic Emission Spectroscopy (also known as ICP-OES, Optical Emission Spectroscopy), is a type of emission spectroscopy that is often used to detect the presence of trace metals in a sample. Through the use of the eponymous Inductively Couple Plasma, an ICP-AES produces excited ions and atoms

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Iron Wikipedia

4 hours ago En.wikipedia.org Show details

Iron (/ ˈ aɪ ər n /) is a chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table.It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core.It is the fourth most common element in the

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Flame atomic absorption spectroscopy eng

8 hours ago Chem.science.unideb.hu Show details

the emitted ones. These findings led to the discovery of new elements such as Cs, Rb, He. The first flame spectrograph was built in 1928, wich could be used for the quantitative determination of elements. The real advance was the emerge of the atomic absorption

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Analytical methods for chemical analysis of geologic and

7 hours ago Pubs.usgs.gov Show details

The determination of twenty-seven elements in aqueous samples by inductively coupled plasma-atomic emission spectrometry. Ferrous iron (Fe. 2+) from 0 to 3.00 mg/L for water, wastewater, and seawater utilizing the HACH This manual presents validated analytical methods used by …

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GUIDE TO XRF BASICS Unicamp

3 hours ago Fem.unicamp.br Show details

field of X-ray analysis. To understand the processes in the atomic shell we must take a look at the Bohr's atomic model. 1.1.2 Bohr's Atomic Model Bohr's atomic model describes the structure of an atom as an atomic nucleus surrounded by electron shells (Fig. 1): Fig. 1: Bohr's atomic model, shell model

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Laboratory Procedure Manual

1 hours ago Wwwn.cdc.gov Show details

atomic absorption spectrophotometer with Zeeman background correction, or a Model 5100 GFAAS. The Zeeman system offers improved background correction over deuterium arc-corrected systems; use of the latter often results in over-correction caused by spectral interference from iron or …

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Copy_of_Practice__Atomic_structure.pdf Practice Atomic

9 hours ago Coursehero.com Show details

Isotope name Isotope abundance Isotope mass (amu) Iron-54 5.90% 53.94 Iron-56 91.72% 55.93 Iron-57 2.10% 56.94 Iron-58 0.280% 57.93 4. A student looked up the naturally occurring isotopes of bromine and found the following information: 50.54% of the naturally occurring isotopes of bromine have an atomic mass of 78.92 u while 49.46% of the

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Frequently Asked Questions

How many atoms are in the element iron?

Atomic Data for Iron (Fe) Atomic Number = 26 Atomic Weight = 55.847 Reference E95 Isotope Mass Abundance Spin Mag Moment 54Fe 53.939612

What is the chemical symbol for the element iron?

Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. The chemical symbol for Iron is Fe. Iron is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core.

How to write the electronic configuration of iron?

Write the electronic configuration of iron. [Ar] 3d64s2 . The electronic iron configuration (e.g.) is 1s2 2s2 2p6 3s2 3p6 4s2 3d6, and the form [ Ar ] 4s2 3d6 is abbreviated. Nonetheless, it wasn’t easy to find the reason why it was written as [ Ar ] 3d6 4s2 instead in some periodic table.

How is the magnetic behavior of an iron atom determined?

Now consider the magnetic behavior of iron atoms in an iron crystal. The crystal form, called the habit, is body-centered cubic with a cube-edge dimension of 2.86 Å, as determined by X-ray diffraction. The first question to ask concerns the relationship of the atomic moment of one iron atom to that of its neighbors.

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