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Q.

The energy required to excite the electron from ground state of hydrogen atom to first excited state is

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a

5.1ev

b

12.1 ev

c

10.2 ev

d

13.6ev

answer is C.

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Detailed Solution

energy of electron in first orbit is -13.6eV

energy of electron in second orbit is -3.4eV.

So the energy required for excitation is 10.2eV.

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