Atoms And Nuclei Question 123

Question: The frequency of 1st line of Balmer series in H2 atom is ν0 . The frequency of line emitted by singly ionised He atom is [CPMT 2002]

Options:

A) 2ν0

B) 4ν0

C) ν0/2

D) ν0/4

Show Answer

Answer:

Correct Answer: B

Solution:

νZ2νH2νHe=(12)2=14νHe=4νH2 = 4n0



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