Periodic Table · element

Boron

B · Z 5

atomic number
5
atomic mass
10.81
notation
B
group
13: Boron
period
2
state0c
Solid
state20c
Solid
occurrence
Primordial
density
2.34
melting pt
2075
boiling pt
3927
discovered
1808
abundance
10
bio class
Ultratrace
bio role
Essential to plants, where it cross-links pectin in the cell wall. The case in animals is unresolved.
ore grade
80000
ore minerals
borax, kernite, colemanite, ulexite
mined as
Primary

extraction

Turkey and California hold nearly all of it. Ore is mined open-pit, dissolved in hot water, filtered and recrystallised into refined borates; boric acid comes from acidifying the solution.

categories

#Metalloid#Icosagens

mines

machines

Referenced by

machine
mine

Open on the Periodic Table shelf — the interactive card, the filters, and everything alongside it.

From the All Periodical Elements database in Notion, last edited 2026-08-25. This page is the row, rendered by the build; nothing on it is written by hand.