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The energy of an electron revolving in n th Bohr's orbit of an atom is given by the expression;
(1) En= 2Π2 me2 z2/n2h2
(2) En= 2Π2 me2 z2/ n2h2
(3) En= 2Π2 me2 z2/n2h2
(4) En= 2Π2 me2 z2/n2h2
Ans: En= 2Π2 me2 z2/n2h2
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The set of quantum numbers n= 3, l=0, m=0, s= -1/2 belongs to the element: (1) Mg (2) Na (3) Ne (4) F Ans: Mg
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For which of the following sets of four quantum numbers, an electron will have the highest energy: n l m s
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