Question

The coordination number and the oxidation state of the central metal ‘D’ in the complex [D(en)₂(H₂O)₂]Cl₃ are ______.

Options

• 6 and 2 respectively

• 4 and 2 respectively

• 3 and 6 respectively

• 6 and 3 respectively

Answer 1

The coordination number and the oxidation state of the central metal ‘D’ in the complex [D(en)₂(H₂O)₂]Cl₃ are 6 and 3 respectively.

Explanation:

In the complex [D(en)₂(H₂O)₂]Cl₃, the coordination number of the central metal D is 6, as ethylenediamine (en) is bidentate (2 sites each × 2 = 4) and H₂O is monodentate (1 site each × 2 = 2), resulting in a cumulative total of 6.

Oxidation state of central metal D = +3, calculated using the charge balance equation:

x + 0 + 0 + (−3) = 0

⇒ x = +3