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Ionization energy of a hydrogen-like ion...

Ionization energy of a hydrogen-like ion A is greater than that of another hydrogen like ion B . Let r, u, E and L represent the radius of the orbit , speed of the electron , total energy of the electron and angular momentum of the electron respectively (for the same n ). In ground state :

A

`r_(A) gt r_(B)`

B

`u_(A) gt u_(B)`

C

`E_(A) lt E_(B)`

D

`L_(A) gt L_(B)`

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The correct Answer is:
B
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