The boride ion is B³⁻ (a boron atom plus three electrons).

A boride (compound) is a compound that has boron with more electropositive elements.

Examples

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• lanthanum hexaboride (LaB₆)
• magnesium diboride (MgB₂)
• magnesium tetraboride (MgB₄)
• titanium boride (TiB₂)

See Borides and Inorganic_compounds_by_element#Boron for a bigger list.

Discussion

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Some borides have some ionic character, but many (such as titanium boride) are inert compounds with high melting points similar to titanium carbide. Lanthanum hexaboride (LaB₆) finds application in the electronics industry.

Anions | Borides

Boride | Boride | Бориды