Question

out of 3d and 4s, which orbital has more energy?​

Answer 1

Answer:

orbital energy is n+l

in 3d

n=3

l=2

n+l=5

in 4s

n=4

l=0

n+l =4

ok

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Answer 2

Answer:

1. The 3d orbital has more energy than the 4s orbital.

2. The 4s orbital is filled first and then after the 3d orbital is filled.

3. According to the Aufbau principle, the orbitals are filled in the order of increasing energy.

4. That is, 1s < 2s < 2p < 3s < 3p < 4s < 3d.