A photon of x rays of 10.2 eV energy is absorbed by hydrogen atom. This will raise an electron from n=1 orbit to which one of the following orbits? a. N =2 b. n= 3 c. n =4 d. n= 5
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∆E=10.2 eV
En - E1 = 10.2 eV
En = 10.2 + (-13.6) eV [because energy of 1st orbit in H atom is equal to -13.6]
En = -3.4
therefore, n=2
[energy of 2nd orbit in H atom is equal to -3.4eV]
answer option (a)
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