Information valid for B-11 unless otherwise noted

Boron

Basic Information

Symbol: B
Atomic Number: 5
Mass: 10.811
Melting Point: 2300.0 C
Boiling Point: 2550.0 C
Number of Protons/Electrons: 5
Number of Neutrons: 6
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 2.34 g/cm³
Color: brownish

Atomic Structure

Number of Energy Levels: 2 First Energy Level: 2 Second Energy Level: 3

Isotopes

Facts

Date of Discovery: 1808
Discoverer: Sir Humphry Davy, J.L Gay-Lussac
Name Origin: From borax and carbon
Uses: heat resistant alloys
Obtained From: kernite