Question

What is the chemical formula of the compound produced when a potassium ion (K+) and a sulfide ion (S2-) combine?

Answer 1

When a potassium ion (K⁺) combines with a sulfide ion (S²⁻), they form a neutral compound by balancing the charges. Potassium has a +1 charge, and sulfide has a -2 charge. To balance the charges, two potassium ions are needed for every sulfide ion.

The chemical formula of the compound produced is K₂S.