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Which of the following is/are incorrect statementsA. First ionisation energy of `e^(-)` in He(g) atom is `+54.4 eV`B. If `e^(-)` makes a transition from n = 3 to n = 1 then maximum line obtained in te spectrum of H-atom sample is 2C. Ratio of radius of `2^(nd)` orbit and `4^(th)` orbit of H-atom is propotional to `n^(3)`D. Time period of `e^(-)` in `n^(th)` orbit of H-atom is propotional to `n^(3)` |
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Answer» Correct Answer - A::B::C::D `1M " "H_(2)O_(2)" "+" "2M" "H_(2)O_(2)` `200 mL" "300 ml` `M =(1xx2+2xx3)/(5)=1.6M` volume strength `= 1.6 xx 11.35 = 18.16 V` Strength = `54.4 g//L` `% (w)/(v) = 5.44%` |
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