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1900's Physics and Wave

In ground sta...

Question

In ground state, the radius of hydrogen atom is $0.53 ˚ A$ . The radius of $L i^{2 +}$ ion Z = 3 in the same state is

A

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B

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C

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D

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Solution

The correct option is A
$r_{L i^{2 +}} = \frac{n^{2}}{z} \times r_{H}$
= $\frac{1^{2}}{3} \times 0.53 = 0.17 ˚ A$

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