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प्रश्न
Calculate the radius of the second orbit of He+.
विकल्प
52.9 pm
105.8 pm
158.7 pm
211.6 pm
MCQ
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उत्तर
105.8 pm
Explanation:
\[\mathrm{r_n=\frac{52.9\times(n)^2}{Z}~pm}\]
He+ is a hydrogen-like species having Z = 2.
Radius of the second orbit of He+
\[\mathrm{r}_{2}=\frac{52.9\times\left(2\right)^{2}}{2}\mathrm{pm}\]
∴ r2 = 105.8 pm
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