Question

Which of the following statements in relation to the hydrogen atom is correct ?

• A. 3s, 3p and 3d orbitals all have the same energy
• B. 3s and 3p orbitals are of lower energy than 3d orbital
• C. 3p orbital is lower in energy than 3d orbital
• D. 3s orbital is lower in energy than 3p orbital

Answer 1

Answer: (A)

3s, 3p and 3d orbitals all have the same energy

Answer 2

For hydrogen the energy order of orbital is

1s < 2s = 2p < 3s = 3p = 3d < 4s = 4p = 4d = 4¦.