Question

the order of filling of electrons in the orbitals of an atom will be
a. 3d,4s,4p,4d,5s
b. 4s,3d,4p,4s,4d
c. 5s,4s,3d,4d,5s
d. 3d,4p,4s,4d,5s​

Answer 1

Answer:

b

Explanation:

the order is 4s,3d,4p,4s,4d

Answer 2

Answer:

the energy of 4s is the lowest in comparison to given orbitals so first of all 4s will be fill than after 3d,4p and last 4d