HardPhysics
+4 / -1
-- 3. When an electron in the hydrogen atom in ground state absorbs a photon of energy 12.09 eV, its angular momentum
A
Decreases by 2.11 x 10⁻³⁴ J s
B
Increases by 2.11 x 10⁻³⁴ J s
C
Decreases by 1.52 x 10⁻³⁴ J s
D
Increases by 1.52 x 10⁻³⁴ J s
Explanation
Energy 12.09 eV takes electron from n=1 to n=3. Initial L1 = h/2π. Final L3 = 3h/2π. ΔL = 2h/2π = h/π = (6.63 x 10⁻³⁴) / 3.14 ≈ 2.11 x 10⁻³⁴ J s.
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-- 2. Magnetic moment due to the motion of the electron in nth energy state of h
Next-- 4. The radius of second orbit of an electron in hydrogen atom is 2.116 Å. The
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