33 As 74.9215956

Arsenic

METALLOID

Phase: Solid

Discovered: Bronze Age

Block: P

Summary

Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid.

Appearance: metallic grey

Source: Wikipedia

Physical Properties

Atomic Mass 74.9215956 u

Density 5.727 g/cm³

Melting Point N/A

Boiling Point N/A

Molar Heat 24.64 J/(mol·K)

Electron Affinity 77.65 kJ/mol

Ionization Energies

1^st: 947 kJ/mol

2^nd: 1798 kJ/mol

3^rd: 2735 kJ/mol

4^th: 4837 kJ/mol

5^th: 6043 kJ/mol

6^th: 12310 kJ/mol