Question

Among the ligands NH₃, en, CN⁻ and CO the correct order of their increasing field strength, is :
(a) NH₃ < en < CN⁻ < CO
(b) CN⁻ < NH₃ < CO < en
(c) en < CN⁻ < NH₃ < CO
(d) CO < NH₃ < en < CN⁻

Answer 1

A IS CORRECT ANSWER........