1.

The radius of the first (lowest) orbit of the hydrogen atom is \[{{a}_{0}}.\] The radius of the second (next higher) orbit will be            [MP PET 2002; MP PMT 2004]       

A.            \[4{{a}_{0}}\] 
B.            \[6{{a}_{0}}\]
C.            \[8{{a}_{0}}\] 
D.            \[10{{a}_{0}}\]
Answer» B.            \[6{{a}_{0}}\]


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