- Atomic Radius (Å)
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.
33
Atomic Number
74.92
Atomic Mass (u)
1090.15
Melting Point (K)
887
Boiling Point (K)
5.73
Density (solid: g/cm³, gas: g/liter)
1.3
Atomic Radius (Å)
1.19
Covalent Radius (Å)
2.18
Electronegativity
9.79
First Ionization Energy (eV)
77.65
Electron Affinity
4
Number of Shells
5
Electron Valency
2, 8, 18, 5
Electron Shell Occupations
0.33
Specific Heat (J/g)