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 of hydrogen atom vary as:
Eₙ ∝ -(1)/(n²)
Updated On: Mar 19, 2026
- -5.44 × 10⁻19eV
- -5.44 × 10⁻19cal
- -5.44 × 10⁻19J
- -5.44 × 10⁻19J
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The Correct Option is C
Solution and Explanation
Step 1: Energy of electron in nᵗh Bohr orbit:
Eₙ = -(13.6)/(n²)eV
Step 2: For n=2:
E₂ = -(13.6)/(4) = -3.4eV
Step 3: Convert into joules:
1eV = 1.6 × 10⁻19J
E₂ = -3.4 × 1.6 × 10⁻19
= -5.44 × 10⁻19J
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