Question

The wavelengths involved in the spectrum of deuterium ${(}_1^{2}D)$ are slightly different from that of hydrogen spectrum, because

• A. size of the two nuclei are different
• B. nuclear forces are different in the two cases
• C. masses of the two nuclei are different
• D. attraction between the electron and the nucleus is different in the two cases

Answer 1

Answer: (C)

Correct answer is (c) masses of the two nuclei are different