1.

Which of the following transition in H-atom corresponding to absorption line of highest frequency?

Answer»

n=1 to n=2
n=3 to n=4
n=2 to n=1
n=2 to n=3

Solution :As the VALUE of n increases, the energy of orbit DECREASES. THEREFORE, absorption of energy from n=1 to n=2 will have maximum energy or highest frequency of absorption line. The TRANSITION fromn=2 to n=1 corresponds to emission of energy.


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