Question

6 multiple choice 1 point use the given ion charges to determine the formula for calcium sulfide. 2+ ca? 2- s? ca2s2 ca2s cas2 cas

Explanation:

Step1: Analyze ion charges

Calcium has a charge of $2 +$ and sulfur has a charge of $2-$.

Step2: Balance charges

To form a neutral compound, the total positive charge must equal the total negative charge. One $Ca^{2 +}$ ion and one $S^{2 -}$ ion will balance each other. So the formula is CaS.

Answer:

D. CaS