Hydroxide

Hydroxide is a polyatomic ion consisting of oxygen

Oxygen

Oxygen is a chemical element [i] with the chemical symbol O and atomic number [i] 8. ...

and hydrogen

Hydrogen

|- | Triple point [i] || 13.8033 K, 7.042 kPa ...

: It has a charge of −1. Hydroxide is one of the simplest of the polyatomic ions. A group of bases containing hydroxide are called hydroxide bases. Hydroxide bases will dissociate into a cation and one or more hydroxide ions in water, making the solution basic.

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Encyclopedia

Hydroxide is a polyatomic ion consisting of oxygen

Oxygen

Oxygen is a chemical element [i] with the chemical symbol O and atomic number [i] 8....

and hydrogen

Hydrogen

|-
| Triple point [i] || 13.8033 K, 7.042 kPa
...

:
It has a charge of −1. Hydroxide is one of the simplest of the polyatomic ions.
A group of bases containing hydroxide are called hydroxide bases. Hydroxide bases will dissociate into a cation and one or more hydroxide ions in water, making the solution basic.