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Antimony

51
Sb
121.75
Antimony
 General | States | Energies | Oxidation & Electrons | Appearance & Characteristics | Reactions | Other Forms Radius | Conductivity | Abundance

General:

Name: Antimony Symbol: Sb
Group: Metal, Nitrogen group Atomic weight: 121.75
Density @ 293 K: 6.684 g/cm3 Atomic volume: 18.23 cm3/mol
Group: Metal, Nitrogen group discovered: 1600

States:

state (s, l, g): s
melting point: 903.94 K boiling point: 1860 K
Heat of fusion: 19.870 kJ/mol Heat of vaporization: 77.140 kJ/mol

Energies:

1st ionization energy: 833.7 kJ/mole
electronegativity: 2.05 2nd ionization energy: 1594.9 kJ/mole
electron affinity: 103 kJ/mole 3rd ionization energy: 2441.1 kJ/mole
Specific heat: 0.21 J/gK heat atomization: 262 kJ/mole atoms

Oxidation & Electrons:

Shells: 2,8,18,18,5 electron configuration: [Kr] 4d10 5s2 5p3
minimum oxidation number: -3 maximum oxidation number: 5
min. common oxidation no.: 0 max. common oxidation no.: 5

Appearance & Characteristics:

structure: rhombohedral color: bluish-white
uses: Pb alloy(battery), dyeing toxicity:
hardness: 3.15 mohs characteristics: brittle; 5 forms

Reactions:

reaction with air: mild, w/ht, =>Sb2Ox x=3-5
reaction with 6M HCl: none reaction with 6M HCl: none
reaction with 15M HNO3: mild, =>Sb2O5 reaction with 6M NaOH: none

Other Forms:

number of isotopes: 2 hydride(s): SbH3
oxide(s): Sb2O3 Sb2O4 Sb2O5 chloride(s): SbCl3 SbCl5

Radius:

ionic radius (2- ion): pm ionic radius (1- ion): pm
atomic radius: 140 pm ionic radius (1+ ion): pm
ionic radius (2+ ion): pm ionic radius (3+ ion): 90 pm

Conductivity:

thermal conductivity: 24.4 J/m-sec-deg
electrical conductivity: 25.641 1/mohm-cm polarizability: 6.6 A^3

Abundance:

source: Stibnite (sulfide)
rel. abund. solar system: -0.510 log abundance earth's crust: -0.7 log
cost, pure: 4.5 $/100g cost, bulk: 0.44 $/100g