* Valency: Calcium (Ca) has a valency of +2, meaning it can form two bonds. Hydroxide (OH) has a valency of -1. To balance the charges, you need two hydroxide ions for every one calcium ion.
* Structure: Calcium hydroxide (Ca(OH)₂) actually exists as a solid with a crystal structure where each calcium ion is surrounded by six hydroxide ions.
Correct Formula: The correct formula for calcium hydroxide is Ca(OH)₂. This formula accurately reflects the bonding and structure of the compound.
Why it matters: The formula of a chemical compound is essential for understanding its chemical properties and reactions. An incorrect formula can lead to incorrect predictions about its behavior.
