Question

For hydrogen atom, the orbital/s with lowest energy is/are :

(A) 4s

(B) \(3 p_{x}\)

(C) \(3 d_{x^{2}-y^{2}}\)

(D) \(3 \mathrm{d}_{\mathrm{z}^{2}}\)

(E) \(4 p_{z}\) 

Choose the correct answer from the options given below :

(1) (A) and (E) only

(2) (B) only

(3) (A) only

(4) (B), (C) and (D) only

Answer 1

Correct option is : (4) (B), (C) and (D) only

In hydrogen atom the orbitals in a shell are degenerate means energy depends only on ‘n’

\( \therefore \ \mathrm{E}_{3 \mathrm{p}_{x}}=\mathrm{E}_{3 \mathrm{d}_{x^{2}-y^{2}}}=\mathrm{E}_{3 \mathrm{d}_{z^{2}}}\)