Boron (B) is a chemical element belonging to the category metalloid, with atomic number 5 and atomic mass 10.8100 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Stays within its layerAstronomy
Neighbourhood in the graph
Above, what contains it; below, what it contains; on the right, what links it to another layer.
Astronomy · Chemical element
Boron
EL5
Identity
Name: Boron
Symbol: B
Atomic number: 5
Atomic mass: 10.8100 u
Position in the periodic table
Group: 13
Period: 2
Category: Metalloid
Physico-chemical properties
Standard state: Solid
Melting point: 2076 °C
Density: 2.34 g/cm³
Electron configuration: 1s² 2s² 2p¹
Scientific description
Boron is a chemical element with symbol B and atomic number 5.
It belongs to the category of metalloids and occupies group 13 and period 2.
Its standard atomic mass is 10.8100 u.