Questions
Balmer gives an equation for wavelength of visible radiation of H-spectrum as The value of k in terms of Rydberg’s constant R is
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a
R
b
4R
c
R/4
d
4/R
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Correct option is D
1λ = R Z21n12 − 1n22. For H−atom Z=1.For visible radiation, n1=2∴ 1λ = R 12 2 − 1n 2 ⇒ λ=4n2Rn2−4=k n2n2−4 ⇒ k=4R.Similar Questions
How much energy is required to take a hydrogen atom from its ground state to excited state where it subsequently emits radiation of six different wavelength?
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