Question

which has more energy 4f or 3d​

Answer 1

Answer:

energy is determined by n+l value

0 = s

1 = p

2 = d

3 = f

for 4f n+l value is 4 + 3 = 7

for 3d n+l value is 3+2 = 5

7>5

therefore, energy of 4f > energy of 3d.

Hope it helps !!