If velocity of an electron in \( 1^{\text {st }} \) orbit of \( \mathrm{H} \) atom is \( \mathrm...

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If velocity of an electron in \( 1^{\text {st }} \) orbit of \( \mathrm{H} \) atom is \( \mathrm{V} \), what will be the velocity of electron in \( 3^{\text {rd }} \) orbit of \( \mathrm{Li}^{+2} \) ?
(a) \( \mathrm{V} \)
(b) \( \mathrm{V} / 3 \)
(c) \( 3 \mathrm{~V} \)
(d) \( 9 \mathrm{~V} \)
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