Question:
The energy of an electron in second Bohr orbit of hydrogen atom is:
The energy of an electron in second Bohr orbit of hydrogen atom is:
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Energy levels in hydrogen vary as 1/n².
Updated On: Mar 20, 2026
- \(-5.44 \times 10^{-19}\,\text{eV}\)
- \(-5.44 \times 10^{-19}\,\text{cal}\)
- \(-5.44 \times 10^{-19}\,\text{kJ}\)
- -5.44 × 10⁻19J
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The Correct Option is D
Solution and Explanation
Step 1: Energy of electron in hydrogen atom: Eₙ = -(13.6)/(n²)eV
Step 2: For n=2: E = -(13.6)/(4) = -3.4eV
Step 3: Converting to joules: E = -3.4 × 1.6×10⁻19 = -5.44×10⁻19J
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