An absorption of 12.088eV energy by an electron in ground state of H-atom brings in the excitation of electron to which orbit?
A
Two
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B
Three
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C
Four
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D
Not possible. Minimum energy required is -13.6eV
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Solution
The correct option is B Three The energy absorbed is 12.088 eV. It is given by the expression E=−13.6×(1n22−1n21)eVSubstitute values in the above expression. 12.088=−13.6×(1n21−112) Hence, n2=3. Thus, the electron is excited to third orbit.