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JEE Advanced 2024Paper 2
Exam
JEE Advanced
Year
2024
Paper
Paper 2
Subject
Chemistry
Chapter
Structure of Atom

JEE Advanced 2024 · Paper 2 · Chemistry · Structure of Atom

According to Bohr's model, the highest kinetic energy is associated...

According to Bohr's model, the highest kinetic energy is associated with the electron in the

Options

  1. Afirst orbit of H atom
  2. Bfirst orbit of He+
  3. Csecond orbit of He+
  4. Dsecond orbit of Li₂⁺

Correct answer

B. first orbit of He+

Step-by-step solution

KE=+13.6×Z2n2K E=+13.6 \times \frac{Z^2}{n^2} (A) KE1,11=+13.6×1212=13.6eV\mathrm{KE}_{1,11}=+13.6 \times \frac{1^2}{1^2}=13.6 \mathrm{eV} (B) KE1,Hc=+13.6×2212=13.6×4eV\mathrm{KE}_{1, \mathrm{Hc}}=+13.6 \times \frac{2^2}{1^2}=13.6 \times 4 \mathrm{eV} (C) KE2,He+=+13.6×2222=13.6eV\mathrm{KE}_{2, \mathrm{He}^{+}}=+13.6 \times \frac{2^2}{2^2}=13.6 \mathrm{eV} (D) KE2,Lii+=+13.6×3222=13.6×94eV\mathrm{KE}_{2, \mathrm{Li}}{ }^{\mathrm{i}^{+}}=+13.6 \times \frac{3^2}{2^2}=13.6 \times \frac{9}{4} \mathrm{eV}
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