Atoms - Result Question 32

34. 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)

[2001]

(a) 16R

(b) 163R

(c) 165R

(d) 167R

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Answer:

Correct Answer: 34. (b)

Solution:

  1. (b) v¯=R(1n121n22), where n1=2,n2=4

v¯=R(14116)

1λ=R(124×16)λ=163R



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