Question

Write the formula for a complex formed between zn2 and nh3, with a coordination number of 3.

Answer 1

ZnSO₄ + 3NH₃ = [Zn(NH₃)₃]SO₄ threeamminezinc sulfate

Zn²⁺ + 3NH₃ = [Zn(NH₃)₃]²⁺ threeamminezinc cation

Answer 2

Answer: Triammine zinc sulfate

Explanation: In Zinc Sulfate (ZnSO4), Zinc atom exist in +2 oxidation state .

Thus 3 ammonia ligands can make a coordination complex with the Zinc Sulfate as shown below -

ZnSO4 + 3 NH3 → [Zn(NH3)] SO4

This equation can also be written in its ionic form as

Zn²⁺ + 3NH₃ = [Zn(NH₃)₃]²⁺