Atoms And Nuclei Question 315

Question: The ionization potential of H-atom is 13.6 V. When it is excited from ground state by monochromatic radiations of 970.6 A, the number of emission lines will be (according to Bohr’s theory)

Options:

A) 10

B) 8

C) 6

D) 4

Show Answer

Answer:

Correct Answer: C

Solution:

1λ=R[1n121n22]
1970.6×1010=1.097×107[1121n22]n2=4
Number of emission line N=n(n1)2=4×32=6



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