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Kinetic energy of electron in a mono ele...

Kinetic energy of electron in a mono electronic species is +1313 lJ/mole. Then which of the following statements are correct
(I) The electron is present in the `2^(nd)` orbit of `He^(+)` ions
(II) The electron is present in the `2^(nd)` orbit of H atom
(III) The electron is present in the `3^(rd)` orbit of `Li^(+2)` ion
(IV) The electron is present in the `4^(th)` orbit of `He^(+)` ion

A

I and II

B

II and III

C

I and III

D

III and IV

Text Solution

Verified by Experts

The correct Answer is:
C
K.E. = `+ (Z^2)/(n^2) (13.6 eV)`/atom,
K.E. `= + (Z^2)/(n^2) (1312 Kj)`/mole
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