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Orbitals

The radius of...

Question

The radius of the shortest orbit in a one-electron system is 18 pm. It may be

A

hydrogen

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B

deuterium

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C

H^{+}

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D

L^{+ +}

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Solution

The correct option is D $L^{+ +}$
Radius is directly proportional to $n^{2} / Z$ .
Therefore, ${L i}^{+ +}$ has the shortest orbit in one-electron system. It's radius is 18 pm.

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