Back to Table
Atomic Number: 33
As
As

Arsenic

74.9220 u

Category

metalloid

State at Room Temperature

solid

Electron Configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

Valence Electrons

5

Lewis Dot:•••••

Electronegativity

2.18

Pauling scale

Oxidation States

-3+3+5

Melting Point

1090 K

816.85°C

Boiling Point

887 K

613.85°C

Density

5.727

g/cm³

Position in Table

Group 15Period 4p-block

Discovery

Historical Information

Discovered byKnown to ancients

Common Uses

Applications & Industries

Semiconductors, lead alloys, wood preservatives, pesticides

Need more chemistry tools? Check out bloodtypeguide.com for additional resources.