Arsenic (As)
A fascinating metalloid element.
Arsenic is element 33 on the periodic table.
Element properties
- Atomic number
- 33
- Symbol
- As
- Atomic mass
- 74.922 u
- Category
- Metalloid
- Period
- 4
- Group
- 15
- Block
- p
- State
- Solid
- Electron configuration
- [Ar] 3d10 4s2 4p3
- Electronegativity (Pauling)
- 2.18
- Density
- 5.727 g/cm³
- Melting point
- 817 °C
- Boiling point
- 614 °C