AP EAMCET · Chemistry · Structure of Atom
The ground and first excited state energies are \(E_1\) and \(E_2\) respectively. Which pair of species has same energy? [Note that energy is indicated in the bracket].
- A \(\mathrm{H}\left(\mathrm{E}_1\right), \mathrm{Li}^{2+}\left(\mathrm{E}_2\right)\)
- B \(\mathrm{He}^{+}\left(\mathrm{E}_1\right), \mathrm{Be}^{3+}\left(\mathrm{E}_2\right)\)
- C \(\mathrm{He}^{+}\left(\mathrm{E}_1\right), \mathrm{Li}^{2+}\left(\mathrm{E}_2\right)\)
- D \(\mathrm{H}\left(\mathrm{E}_2\right), \mathrm{Be}^{3+}\left(\mathrm{E}_1\right)\)
Answer & Solution
Correct Answer
(B) \(\mathrm{He}^{+}\left(\mathrm{E}_1\right), \mathrm{Be}^{3+}\left(\mathrm{E}_2\right)\)
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