state gov Kerala PSC 10th Level (Common Preliminary Examination) Mock Test Series 2025 Chemistry Hydrogen
Which one of the following statements in relation to the hydrogen atom is correct?
1
3s, 3p and 3d -orbitals all have the same energy.
2
3s and 3p-orbitals are of lower energy than 3d -orbital.
3
3p-orbital is lower in energy than 3d -orbital.
4
3s-orbital is lower in energy than 3p-orbital.