The energy of the electron in the first orbit of hydrogen, Chemistry

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The energy of the electron in the first orbit of  He+  is  -871.6x 10 -20J . The energy of the electron in the first orbit of hydrogen would be:

(1) -871.6 x10-20J                             

(2) -435.8x 10-20J             

(3) -217.9x 10-20J                           

(4) -108.9x 10-20J

Ans:  -217.9x 10-20J

 


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