JEE Mains · Chemistry · STD 11 - 2. structure of atom
Which of the following statements regarding the energy of the stationary state is true in the following one-electron system ?
- A \(-1.09\times10^{-18}J\) for second orbit of H atom.
- B \(+2.18 \times 10^{-18} J\) for second orbit of \(He ^{+}\)ion
- C \(+8.72 \times 10^{-18} J\) for first orbit of \(He ^{+}\)ion
- D \(-2.18 \times 10^{-18} J\) for third orbit of \(Li ^{2+}\) ion
Answer & Solution
Correct Answer
(D) \(-2.18 \times 10^{-18} J\) for third orbit of \(Li ^{2+}\) ion
Step-by-step Solution
Detailed explanation
\(E_{n}=-2.18\times10^{-18}\frac{Z^{2}}{n^{2}}J/atom.\) For \(3^{rd}\) orbit of \(Li^{-2}\) ion \(=-2.18\times10^{-18}\times\frac{3^{2}}{3^{2}}=-2.18\times10^{-18}J.\)
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