Atomic Number: 33

Name: Arsenic

Atomic symbol: As

Atomic Weight: 74.9216

Electron affinity: -77 kJ/mol

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p³

Ionization energies: 947 kJ/mol

Pauling electronegativity: 2.0

Boiling Point: 613oC (sublimes)

Density: 5.73 g/cm³

Covalent radius: 1.21 angstroms

Ionic radius: 2.22 angstroms (-3); 0.72 angstroms (+3); 0.46 angstroms (+5)

Van Der Wall's radius: 2.0 angstroms

Common oxidation states in compounds: -3, +3, +5