The Periodic Table of Elements
33
As
Arsenic
74.92160(2) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | metalloid | 5.727 kg/L | 119 pm | -78 | 947 kJ/mol | 1090 °K | 887 °K | Ancient |
