how to determine the hybridization of a complex

Question

How to determine the hybridization of a complex compound in a easy way?

Generally d-block elements have tendency to form coordination compounds.

from at. no. 21 .i.e scandium to 30 zn

the configuration starts as: 4s² 3d¹ to 4s² 3d¹⁰ except chromium and copper

1) First step should be to find the coordination no.

2) Second step should be: Determine the oxidation no. of metal.

3) And According to that start removing electrons from 4s² shell then from 3d orbital.