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If the velocity of the electron in first...

If the velocity of the electron in first in first of `H` atom is `2.18xx10^(6) m//s`, what is its value in third orbit?

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The correct Answer is:
`7.27xx10^(5) m//s`
`v_(3)=v_(1)xx(Z/n) rArr v_(3)=2.18xx10^(6)xx(1/3)=7.27xx10^(5) m//s`
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