Which hydrogen like species will have the same radius as that of the first Bohr orbit of a hydrogen atom?

n = 2, L i^{2 +}

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n = 2, B e^{3 +}

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n = 2, H e^{+}

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n = 3, L i^{2 +}

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Solution

The correct option is B $n = 2, B e^{3 +}$
Expression for Bohr's orbit is,
$r_{n} = \frac{a_{0} n^{2}}{Z} = a_{0}$
when, $n = 2, Z = 4$

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Similar questions

Correct order of radius of the $1^{s t}$ orbit of $H$ , $H e^{+}, L i^{2 +}, B e^{3 +}$ is:

H, H e^{+}, L i^{2 +}, B e^{3 +}

H < H e^{+} < L i^{2 +} < B e^{3 +}

A A

A A

(B e^{3 +})

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