Question

Answer the following about the complex \([Ti(H_2O)_6]^{3+}\):
(i) What happens to the colour of complex \([Ti(H_2O)_6]^{3+}\) when heated gradually?
(ii) Write the electronic configuration for \(d^5\) ion if \(\Delta_0<P\).
(iii) Write the hybridization and magnetic behaviour of the complex \([Ni(CO)_4]\).

Hint:

Heating often causes colour changes in complexes due to electronic transitions between the d-orbitals.

Answer 1

(i) Upon heating, the colour of \([Ti(H_2O)_6]^{3+}\) shifts due to the transition of electrons between energy levels.
(ii) For a \(d^5\) ion with \(\Delta_0<P\), the electronic configuration is \(t_{2g}^4 e_g^2\).
(iii) The hybridization of \([Ni(CO)_4]\) is \(sp^3\), and it is diamagnetic due to all electrons being paired.