JEE Main20252 Apr 2025Morning ShiftPhysicsAtomic PhysicsActual
Considering Bohr's atomic model for hydrogen atom : (A) the energy of H atom in ground state is same as energy of He ⁺ ion in its first excited state. (B) the energy of H atom in ground state is same as that for Li ⁺⁺ ion in its second excited state. (C) the energy of H atom in its ground state is same as that of He ⁺ ion for its ground state. (D) the energy of He ⁺ ion in its first excited state is same as that for
Options
- A(B), (D) only
- B(A), (B) only
- C(A), (D) only
- D(A), (C) only
Correct answer
B. (A), (B) only
Step-by-step solution
aligned & E Z n ^2 & Z _ H =1 Z _ He ⁺ =2 Z _ Li ⁺² =3 aligned aligned & 1^ st excited state n =2 & 2^ nd excited state n =3 aligned From the given statements only A & B are correct.