Question

Indicate the coordination number for the central metal atom in each of the following coordination compounds:

(a) [Pt(H₂O)₂Br₂]

(b) [Pt(NH₃)(py)(Cl)(Br)] (py = pyridine, C₅H₅N)

(c) [Zn(NH₃)₂Cl₂]

(d) [Zn(NH₃)(py)(Cl)(Br)]

(e) [Ni(H₂O)₄Cl₂]

(f) [Fe(en)₂(CN)₂]+ (en = ethylenediamine, C₂H₈N₂)

Answer 1

The coordination numbers for the central metal atom in the given coordination compounds are 6 for [Pt(H₂O)₂Br₂], [Pt(NH₃)(py)(Cl)(Br)], [Zn(NH₃)(py)(Cl)(Br)], [Ni(H₂O)₄Cl₂], and [Fe(en)₂(CN)₂]+, and 4 for [Zn(NH₃)₂Cl₂].

Step-by-step explanation:

The coordination numbers for the central metal atom in each of the given coordination compounds are:

(a) [Pt(H₂O)₂Br₂] - The coordination number is 6.

(b) [Pt(NH₃)(py)(Cl)(Br)] - The coordination number is 6.

(c) [Zn(NH₃)₂Cl₂] - The coordination number is 4.

(d) [Zn(NH₃)(py)(Cl)(Br)] - The coordination number is 6.

(e) [Ni(H₂O)₄Cl₂] - The coordination number is 6.

(f) [Fe(en)₂(CN)₂]+ - The coordination number is 6.