Is Ca(OH)2 a polyatomic compound

Calcium hydroxide, Ca(OH)₂, is not considered a polyatomic compound itself, but it contains a polyatomic ion, hydroxide (OH⁻). In this compound, two hydroxide ions are bonded to a calcium ion (Ca²⁺). Therefore, while Ca(OH)₂ is an ionic compound, it includes a polyatomic ion within its structure.