67. Energy of an electron in an excited state of hydrogen
atom is - 3.4 eV. Its angular momentum will be
(a) 1.11% 1034 Js (b) 1.51x 10-31
(c) 2.11x 10-34 Js (d) 3.72x 10-JS
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sry..... I don't know the answer of this question
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