Question

to which orbit the electron in hydrogen atom will jump on observing 12.1 ev of energy.
subject : chemistry
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Answer 1

Explanation:

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Answer 2

Answer:

4th Orbit...

Explanation:

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.

According to Bohr’s theory, energy of electron in n th orbital of hydrogenic atom/ion with atomic number Z = −13.6 Z^2/n^2 eV

∴−0.85=−13.6 Z^2/n^2

For hydrogen, Z=1;

∴−0.85=−13.6 1^2/n2

∴n^2=13.6/0.85=16

∴n=4

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

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