Question

The reason for chromium to have Ar3d54s1
1) Paulie’s exclusion principle
2) Symmetrical arrangement of electrons
3) more exchange energy
4) both 2 and 3

Answer 1

Answer:

I think both 2 and 3 but it never come in my knowledge but I tried

Answer 2

Answer:

both

2

and

3

is

correct

.

.

.

.

.