Question

Give the oxidation state and coordination number of central metal ion in the following complexes respectively :

i) k3[co2(c2o4)3]
ii) [cr(en)2cl2]cl
iii) [NH4] 2 (co F4)
iv) Mn(H2O6)so4​

Answer 1

Answer:

(i) K3[Co(C2O4)3]

The central metal ion is Co.

Its coordination number is 6.

The oxidation state can be given as:

x - 6 = -3

x = + 3

The d orbital occupation for Co3+ is t2g6eg0.

(ii) cis-[Cr(en)2Cl2]Cl

The central metal ion is Cr.

The coordination number is 6.

The oxidation state can be given as:

x + 2(0) + 2(-1) = +1

x - 2 = +1

x = +3

The d orbital occupation for Cr3+ is t2g3.

(iii) (NH4)2[CoF4]

The central metal ion is Co.

The coordination number is 4.

The oxidation state can be given as:

x - 4 = -2

x = + 2

The d orbital occupation for Co2+ is eg4 t2g3.

(iv) [Mn(H2O)6]SO4

The central metal ion is Mn.

The coordination number is 6.

The oxidation state can be given as:

x + 0 = +2

x = +2

The d orbital occupation for Mn is t2g3 eg2.

I hope it helps you ❤️❤️