Question

practice: what is the chemical formula of potassium nitride? hint: potassium (k), and nitride (n) 3kn kn k₃n

Explanation:

Step1: Determine ion charges

Potassium (K) is in Group 1 of the periodic - table, so it forms a $K^+$ ion with a +1 charge. Nitride (N) is in Group 15, and it forms an $N^{3 - }$ ion with a - 3 charge.

Step2: Balance charges

To balance the charges in an ionic compound, we need 3 potassium ions to balance the - 3 charge of one nitride ion.

Answer:

C. $K_3N$