JEE Main 2025 Chemistry question
Which of the following is/are not correct with respect to energy of atomic orbitals of hydrogen atom? (A) 1s < 2p < 3d < 4s (B) 1s < 2s = 2p < 3s = 3p (C) 1s < 2s < 2p < 3s < 3p (D) 1s < 2s < 4s < 3d Choose the correct answer from the options given below :
Answer: (3)
Solution
For hydrogen (single electron species), energy depends only on n, so 2s=2p and 3d<4s; hence C and D are incorrect