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MHT CET 2024 (16 May, Shift 2) · Energy of the Electron & Energy Levels

Energy of the Electron & Energy Levels question from MHT CET 2024 (16 May, Shift 2)

Q18MHT CET 2024 · 16 MAY · SHIFT 2Medium

Energy of the Electron & Energy Levels

In the second orbit of hydrogen atom, the energy of an electron is ' EE '. In the third orbit of helium atom, the energy of the electron will be (atomic number of helium =2= 2)

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Answer: (c)

  1. En∝Z2n2E_n \propto \frac{Z^2}{n^2}.
  2. EHe,3EH,2=22/3212/22=49×4=169\frac{E_{He,3}}{E_{H,2}} = \frac{2^2/3^2}{1^2/2^2} = \frac{4}{9} \times 4 = \frac{16}{9}
  3. So the answer is (c) 16E9\frac{16E}{9}.
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