Symbol
B
Atomic Number
5
Atomic Mass
10.81
Protons
5
Neutrons
6
Electrons
5
Type
Metalloid
Isotopes
Boron-10, Boron-11
Discovery Year
1808
Discovered By
Joseph Louis Gay-Lussac
Group
13
Period
2
Boiling Point
7101°F
Melting Point
3769°F
Electron Configuration
[He] 2s² 2p¹
Density (g/cm³)
2.34
Crystal Structure
Rhombohedral
Magnetism
Diamagnetic
Abundance in Earth's Crust
0.00086%
Phase at Room Temperature
Solid