The wavelength of a spectral line for an electronic transition is inversely related to:

the number of electrons undergoing the transition

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the nuclear charge of the atom

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the difference in the energy of the energy levels involved in the transition

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the velocity of electron undergoing the transition

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Solution

The correct option is C the difference in the energy of the energy levels involved in the transition
$Δ E = E_{2} - E_{1}; \frac{h c}{λ} = E_{2} - E_{1}$ or $λ \propto \frac{1}{(E_{2} - E_{1})}$

Suggest Corrections

	List I		List II
i	Total number of lines in H-spectrum for a transition 5 -> 1	A	Decreases
ii	Intensity of spectral line in the spectrum, as	B	H-spectrum
iii	n value increases	C	10
iv	Band spectrum is due to	D	Rotations and vibrations of atoms in molecules in addition to electronic transition
	The proof for the presence of energy levels in an atom	E	lncreases