33

As

Arsenic

74.922

Semimetal
Solid

Discovery

Magnus, Albertus (1886)

Etymology

Persian via Greek and Latin

Meaning

Orpiment

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Rhombohedral

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

816.8 °C

1089.95 K

Boiling point

  (at 101.325 kPa)

2830.0 °C

3103.15 K

Density

  (at 21 °C and 101.325 kPa)

5.72 g/cm3

Electronegativity

2.18