1.

Which of the following electron transition in a hydrogen atom will require the largest amount of energy                 [UPSEAT 1999, 2000, 01]

A.                 From \[n=1\] to \[n=2\]               
B.                 From \[n=2\] to \[n=3\]
C.                 From \[n=\infty \] to \[n=1\]     
D.                 From \[n=3\] to \[n=5\]
Answer» B.                 From \[n=2\] to \[n=3\]


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