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Kinetic energy of electron in a mono electronic species is +1312 kJ/mole. Then which of the following statements are correct I)   The electron is present in the 2nd orbit of  He+ ionII)  The electron is present in the  2nd orbit of  H atomIII) The electron is present in the 3rd orbit of   Li+2 ionIV) The electron is present in the 4th orbit of  He+ ion

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a

I and II

b

II and III

c

I and III

d

III and IV

answer is C.

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Detailed Solution

K.E=1312×z2n2KJ/moleHint   z=n
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Kinetic energy of electron in a mono electronic species is +1312 kJ/mole. Then which of the following statements are correct I)   The electron is present in the 2nd orbit of  He+ ionII)  The electron is present in the  2nd orbit of  H atomIII) The electron is present in the 3rd orbit of   Li+2 ionIV) The electron is present in the 4th orbit of  He+ ion