Iodine Valence Electrons

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Valence

Iodine Has Valence Electrons

  • Since Iodine (I) is below Period 3 on the periodic table it can hold more than 8 electrons. In the Lewis structure for ICl4- the Iodine atom has 12 valence electrons. Also note that you should put the ICl4- Lewis structure in brackets with as 1- on the outside to show that it is an ion with a negative one charge.
  • Iodine (I) Energy Levels of Neutral Iodine ( I I ) Configuration: Term: J: Level(cm-1): Ref. 5p 5: 2 P°: 3/2: 0.00: M62: 1/2: 7603.15.
  • Iodine has seven valence electrons. Valence electrons of an atom are located in the outermost shell of the atom and participate in bonding.

Name: Iodine Symbol: I Atomic Number: 53 Atomic Mass: 126.90447 amu Melting Point: 113.5 °C (386.65 K, 236.3 °F) Boiling Point: 184.0 °C (457.15 K, 363.2 °F) Number of Protons/Electrons: 53 Number of Neutrons: 74 Classification: Halogen Crystal Structure: Orthorhombic Density @ 293 K: 4.93 g/cm 3 Color: blackish Atomic Structure.

Element Iodine - I

Comprehensive data on the chemical element Iodine is provided on this page; including scores of properties, element names in many languages, most known nuclides of Iodine. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

Iodine Menu

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Overview of Iodine

  • Atomic Number: 53
  • Group: 17
  • Period: 5
  • Series: Halogens

Iodine's Name in Other Languages

  • Latin: Iodum
  • Czech: Jod
  • Croatian: Jod
  • French: Iode
  • German: Jod - r
  • Italian: Iodio
  • Norwegian: Jod
  • Portuguese: Iôdo
  • Russian: Иод
  • Spanish: Yodo
  • Swedish: Jod

Atomic Structure of Iodine

  • Atomic Radius: 1.32Å
  • Atomic Volume: 25.74cm3/mol
  • Covalent Radius: 1.33Å
  • Cross Section (Thermal Neutron Capture) σa/barns: 6.2
  • Crystal Structure: Orthorhombic
  • Electron Configuration:
    1s2 2s2p6 3s2p6d10 4s2p6d10 5s2p5
  • Electrons per Energy Level: 2,8,18,18,7
    Shell Model
  • Ionic Radius: 2.2Å
  • Filling Orbital: 5p5
  • Number of Electrons (with no charge): 53
  • Number of Neutrons (most common/stable nuclide): 74
  • Number of Protons: 53
  • Oxidation States:±1,5,7
  • Valence Electrons: 5s2p5
    Electron Dot Model

Chemical Properties of Iodine

  • Electrochemical Equivalent: 4.7348g/amp-hr
  • Electron Work Function:
  • Electronegativity: 2.66 (Pauling); 2.21 (Allrod Rochow)
  • Heat of Fusion: 7.824kJ/mol
  • Incompatibilities:
    Ammonia, acetylene, acetaldehyde, powdered aluminum, active metals, liquid chlorine
  • Ionization Potential
    • First: 10.451
    • Second: 19.131
    • Third: 33
  • Valence Electron Potential (-eV): -6.55

Physical Properties of Iodine

Electrons
  • Atomic Mass Average: 126.9045
  • Boiling Point: 458.55K 185.4°C 365.7°F
  • Coefficient of lineal thermal expansion/K-1: N/A
  • Conductivity
    Electrical: 8.0E-16 106/cm Ω
    Thermal: 0.00449 W/cmk
  • Density: 4.93g/cc @ 300K
  • Description:
    Halogen solid form: shiny, non-metallic, grayish-black flakes; gas: violet.
  • Elastic Modulus:
    • Bulk: 7.7/GPa
  • Enthalpy of Atomization: 106.7 kJ/mole @ 25°C
  • Enthalpy of Fusion: 7.76 kJ/mole
  • Enthalpy of Vaporization: 20.88 kJ/mole
  • Flammablity Class: Non-combustible solid
  • Freezing Point:see melting point
  • Heat of Vaporization: 20.752kJ/mol
  • Melting Point: 386.65K 113.5°C 236.3°F
  • Molar Volume: 25.74 cm3/mole
  • Physical State (at 20°C & 1atm): Solid
  • Specific Heat: 0.214J/gK

Regulatory / Health

List Of Valence Electrons For Each Element

  • CAS Number
    • 7553-56-2
  • RTECS: NN1575000
  • OSHAPermissible Exposure Limit (PEL)
    • 1 ppm = 10.38mg/m3 @ 25°C & 1 atm
    • Ceiling: 0.1 ppm
  • OSHA PEL Vacated 1989
    • Ceiling: 0.1 ppm
  • NIOSHRecommended Exposure Limit (REL)
    • Ceiling: 0.1 ppm
    • IDLH: 2 ppm
  • Routes of Exposure: Inhalation; Ingestion; Skin and/or eye contact
  • Target Organs: Eyes, skin, respiratory system, central nervous system, cardiovascular system
  • Levels In Humans:
    Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
    • Blood/mg dm-3: 0.057
    • Bone/p.p.m: 0.27
    • Liver/p.p.m: 0.7
    • Muscle/p.p.m: 0.05-0.5
    • Daily Dietary Intake: 0.1-0.2 mg
    • Total Mass In Avg. 70kg human: 12-20 mg

Who / Where / When / How

  • Discoverer: Bernard Courtois
  • Discovery Location: Dijon France
  • Discovery Year: 1811
  • Name Origin:
    Greek: iôdes (violet).
  • Abundance of Iodine:
    • Earth's Crust/p.p.m.: 0.14
    • Seawater/p.p.m.:
      • Atlantic Suface: 0.0489
      • Atlantic Deep: 0.056
      • Pacific Surface: 0.043
      • Pacific Deep: 0.058
    • Atmosphere/p.p.m.: N/A
    • Sun (Relative to H=1E12): N/A
  • Sources of Iodine:
    Occurs on land and in the sea in sodium and potassium compounds. World production of iodine is around 12,000 tons. Primary producing areas are Chile and Japan.
  • Uses of Iodine:
    Required in small amounts by humans. Once used as an antiseptic, but no longer due to its poisonous nature. Used as a disinfectant, in pharmaceuticals, dyes, catalysts and photography.
  • Additional Notes:

Iodine Menu

Iodine valence electrons number
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References

I valence electron

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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Kenneth Barbalace. Periodic Table of Elements - Iodine - I. EnvironmentalChemistry.com. 1995 - 2021. Accessed on-line: 4/24/2021
https://EnvironmentalChemistry.com/yogi/periodic/I.html
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Iodine 7 Valence Electrons

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