AP EAMCET · Chemistry · Structure of Atom
The energy required (in eV) to excite an electron of \(\mathrm{H}\)-atom from the ground state to the third state is
- A \(+0.85\)
- B \(-3.4\)
- C \(12.1\)
- D \(-12.1\)
Answer & Solution
Correct Answer
(C) \(12.1\)
Step-by-step Solution
Detailed explanation
\(E=\frac{-13.6 Z^2}{n^2}\) \(E_1=\frac{-13.6 \times 1^2}{1^2}\) \(=-13.6 \mathrm{eV}\) \(E_2=\frac{-13.6 \times 1^2}{3^2}\) \(=-1.5111 \mathrm{eV}\) \(\therefore \quad \Delta E=E_2-E_1\)…
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