Question

Calcium hydroxide . Write formula using criss cross method and calculate the molecular mass of the compounds

Answer 1

Explanation:

When creating ionic compounds with these polyatomic ions, treat them the same way as typical monatomic ions (only one atom). For example, calcium hydroxide has the formula Ca(OH)2 because hydroxide has -1 charge and calcium has a 2+ charge. Two hydroxides were needed to balance off the +2 charge of calcium.