JEE Mains · Physics · STD 12 - 12. atoms
Considering Bohr's atomic model for hydrogen atom :
(A) the energy of H atom in ground state is same as energy of \(\mathrm{He}^{+}\)ion in its first excited state.
(B) the energy of H atom in ground state is same as that for \(\mathrm{Li}^{++}\)ion in its second excited state.
(C) the energy of H atom in its ground state is same as that of \(\mathrm{He}^{+}\)ion for its ground state.
(D) the energy of \(\mathrm{He}^{+}\)ion in its first excited state is same as that for \(\mathrm{Li}^{++}\)ion in its ground state
Choose the correct answer from the options given below :
- A (B), (D) only
- B (A), (B) only
- C (A), (D) only
- D (A), (C) only
Answer & Solution
Correct Answer
(B) (A), (B) only
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{E} \propto \frac{\mathrm{Z}}{\mathrm{n}^2} \\ & \mathrm{Z}_{\mathrm{H}}=1 \quad \mathrm{Z}_{\mathrm{He}^{+}}=2 \quad \mathrm{Z}_{\mathrm{Li}^{+2}}=3\end{aligned}\)…
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