Astatine element properties

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Name: Astatine Symbol: At
Group: Halogen Atomic weight: (210)
Density @ 293 K: ? Atomic volume: ?
Group: Halogen discovered: 1940


state (s, l, g): s
melting point: 575.2 K boiling point: K
Heat of fusion: ? Heat of vaporization: ?


1st ionization energy: 890 kJ/mole
electronegativity: 2.2 2nd ionization energy: kJ/mole
electron affinity: 270 kJ/mole 3rd ionization energy: kJ/mole
Specific heat: ? heat atomization: 92 kJ/mole atoms

Oxidation & Electrons:

Shells: 2,8,18,32,18,7 electron configuration: [Xe] 4f14 5d10 6s2 6p5
minimum oxidation number: -1 maximum oxidation number: 7
min. common oxidation no.: -1 max. common oxidation no.: 1

Appearance & Characteristics:

structure: color:
uses: toxicity:
hardness: mohs characteristics: Radioactive


reaction with air:
reaction with 6M HCl: reaction with 6M HCl:
reaction with 15M HNO3: reaction with 6M NaOH:

Other Forms:

number of isotopes: 0 hydride(s): HAt
oxide(s): chloride(s):


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


thermal conductivity: J/m-sec-deg
electrical conductivity: 1/mohm-cm polarizability: 6 A^3


source: Synthetic(Th or U decay)
rel. abund. solar system: log abundance earth's crust: log
cost, pure: $/100g cost, bulk: $/100g

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