Question

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⏺ To when orbit the electron in H atom will jump on absorbing 12.1 ev of energy ?


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Answer 1

Answer

The energy of ground state electron in Hydrogen atom is -13.6 eV.

Now, it absorbs 12.1 eV energy and hence, its energy increases to -13.6 + 12.1 = -0.85 eV.

For hydrogen, Z=1;

Therefore, the electron jumps to 4 orbit on absorbing 12.1 eV energy.

Answer 2

since it is an hydrogen atom

and using the energy formula

we know

E(of electron in orbit)=-13.6×z^2/n^2

so,

in first orbit

n=1,z=1

so,it energy in it will be -13.6

now,when it aborve 12.1 e.v

it's total energy=:-13.6+12.1=-1.5

equate it to the formula ,formula of energy of electron

-1.5=-13.6×1^2/n^2

1.5/13.6=1/n^2

n^2=13.6/1.5

n^2=8.4

n=2.9

n=3(approx)

so,it will jump.im 3rd orbital