COMEDK · Physics · 28. Atomic Physics
Which state of triply ionised Beryllium \(\left(\mathrm{Be}^{+++}\right)\) has the same orbital radius as that of the ground state of hydrogen?
- A \(n=3\)
- B \(n=4\)
- C \(n=1\)
- D \(n=2\)
Answer & Solution
Correct Answer
(D) \(n=2\)
Step-by-step Solution
Detailed explanation
The radius in Bohr's atomic model is given by \[ r=0.53 \frac{n^{2}}{Z} Å \] For \(\mathrm{Be}^{3+} ; \mathrm{Z}_{\mathrm{Be}}=4, n_{\mathrm{Be}}=\) ? For \(\mathrm{H}, \mathrm{Z}_{\mathrm{H}}=1, n_{\mathrm{H}}=1\) As per question,…
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