An electron changes its position from orbit n = 2 to the

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An electron changes its position from orbit n = 2 to the orbit n = 4 of an atom. The wavelength of the emitted radiations is (R = Rydberg’s constant)

V = R		1	-	1
		n²₁		n²₂

where n₁ = 2, n₂ = 4

V = R		1	-	1
		4		16

	1	= R		12
	λ			4 × 16

⇒ λ =	16
	3R