The bohr orbit radius for the hydrogen atom, Chemistry

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The Bohr orbit radius for the hydrogen atom (n=1)   is approximately  0.530Å . The radius for the first excited state (n=2)  orbit is:

(1) 0.13Å                             

(2) 1.06Å              

(3) 4.77Å                            

(4) 2.12Å

Ans: 2.12Å

 


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