Question

hey guys

what is transition contraction?

please answer quickly,, please... ​

Answer 1

Answer:

The d-block contraction (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals on the period 4 elements. The elements in question are Ga, Ge, As, Se, Br, and Kr. Their electronic configurations include completely filled d orbitals (d10).