The exhibition of highest co-ordination number depends on the availability of vacant orbitals in the central atom. Which of the following elements is not likely to act as central atom in ?
(i) B
(ii) Al
(iii) Ga
(iv) In
The answer is the option (i) B
The element M in the complex ion has 6 as the coordination number and the B has no d orbitals. Therefore the maximum coordination number it can show is 4 and cannot form the .