General: |
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Name: Indium
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Symbol: In
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Group: Metal
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Atomic weight: 114.82
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Density @ 293 K: 7.31 g/cm3
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Atomic volume: 15.7 cm3/mol
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Group: Metal
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discovered: 1863
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States: |
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state (s, l, g): s
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melting point: 429.81 K
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boiling point: 2353 K
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Heat of fusion: 3.263 kJ/mol
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Heat of vaporization: 231.50 kJ/mol
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Energies: |
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1st ionization energy: 558.3 kJ/mole
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electronegativity: 1.78
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2nd ionization energy: 1820.6 kJ/mole
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electron affinity: 30 kJ/mole
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3rd ionization energy: 2704.5 kJ/mole
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Specific heat: 0.23 J/gK
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heat atomization: 243 kJ/mole atoms
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Oxidation & Electrons: |
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Shells: 2,8,18,18,3
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electron configuration: [Kr] 4d10 5s2 5p1
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minimum oxidation number: 0
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maximum oxidation number: 3
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min. common oxidation no.: 0
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max. common oxidation no.: 3
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Appearance & Characteristics: |
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structure: distorted fcc structure
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color: silvery-white
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uses: transistors, photocells
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toxicity:
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hardness: 1.2 mohs
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characteristics: soft
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Reactions: |
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reaction with air: mild, =>In2O3
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reaction with 6M HCl: mild, =>H2, InCl3
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reaction with 6M HCl: mild, =>H2, InCl3
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reaction with 15M HNO3: mild, =>In(NO3)3
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reaction with 6M NaOH: none
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Other Forms: |
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number of isotopes: 2
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hydride(s):
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oxide(s): In2O3
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chloride(s): InCl InCl3
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Radius: |
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ionic radius (2- ion): pm
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ionic radius (1- ion): pm
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atomic radius: 167 pm
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ionic radius (1+ ion): pm
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ionic radius (2+ ion): pm
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ionic radius (3+ ion): 94 pm
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Conductivity: |
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thermal conductivity: 81.8 J/m-sec-deg
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electrical conductivity: 119.474 1/mohm-cm
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polarizability: 9.7 A^3
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Abundance: |
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source: Zn/Pb smelting by-product
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rel. abund. solar system: -0.735 log
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abundance earth's crust: -1 log
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cost, pure: 120 $/100g
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cost, bulk: $/100g
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