Question

The filling of which orbital is represented by the transition metals in period 4

Answer 1

4s orbital has a lower energy than the 3d,so it fills next.
which fits with the chemistry of potassium & calcium and the entire period

Final answer is > 3d

Answer 2

Step-by-step explanation:

Transition metals are defined as the metals that have incompletely filled d-orbital in their ground state or stable oxidation state.

General electronic configuration of transition metals is
`ns^(1-2) (n - 1)d^(1-10)`.

The transition elements which are present in period 4 are scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc.

Thus, we can conclude that the filling of d-orbital is represented by the transition metals in period 4.