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Question

The Bohr's energy equation for H -atoms reveals that the energy level of a shell is given by E = - 13.58/n2 eV. The smallest amount that an H-atoms will absorb, if in ground state is:


A
1.0eV
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B
9eV
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C
9eV
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D
19eV
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Solution

The correct option is D 19eV

The smallest value that an electron in H-atom in ground state can absorb.
=E2 - E1



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