alleryThe relationship E = hν (Planck) between photon energy and frequency contains constant h that is approximately
A9.11 × 10⁻³¹ kg
B3.00 × 10⁸ m/s
C1.60 × 10⁻¹⁹ C
D6.63 × 10⁻³⁴ J s
Answer & Solution
Correct answer: D. 6.63 × 10⁻³⁴ J s
1. Planck's constant h relates photon energy to frequency: E = h ν.
2. Numerically h ≈ 6.626 × 10⁻³⁴ J·s.
3. In eV·s, h ≈ 4.14 × 10⁻¹⁵ eV·s.
4. It is one of the fundamental constants of quantum physics.
_Source: syllabus Chemistry, Ch 2 "Structure of Atom", §2.4_
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