Basicity: slightly acidic

Elements react slightly acidic.

Boronblack-brown

Carbonblack, metallic-looking (graphite); clear (diamond)

Phosphoruswhite, red and violet are waxy, black is metallic-looking

Niobiumgray metallic, bluish when oxidized

Rutheniumsilvery white metallic

Antimonysilvery lustrous gray

Telluriumsilvery lustrous gray (crystalline); brown-black powder (amorphous)

Xenoncolorless gas, exhibiting a blue glow when placed in an electric field

Tantalumgray blue

Tungstengrayish white, lustrous

Rheniumsilvery-grayish

Osmiumsilvery, blue cast

Bismuthlustrous brownish silver

Legend