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For `Be^(3+)` ion. Which of the following statement(s) is/are INCORRECT ?A. lonisation energy `= 122.4 eV`.B. The potential energy of electron in `1^(st)` excited satate is `-217.6 eV`.C. The frequency of revolution of electron in `2^(nd)` orbit of `Be^(3+)` is hall of the frequency of revoluation of electron in ground state of `H-"atom"`.D. `2^(nd)` excitation potential `= 193.4 V`. |
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Answer» Correct Answer - A::B::C `(A)` lonisation energy `= 13.6 xx 16 eV = 217.6 eV` `(B) PE = -27.2 xx (4^(2))/(2^(2)) = -108.8e V` `(C) (f_(2))_(Be^(3+))/(f_(1))_(H) = ((4^(2))/(2^(3)))/(1^(2)/(1^(3))) = 2` The frequency of revolution of electron in `2^(nd)` orbit is doble of the frequency of revolution of electron in ground state of `H -` atom. `(D) 2^(nd)` excitation potential `= 12.09 xx 16 = 193.4 V` |
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