Question

The wavelengths involved in the spectrum of deuterium $( 1^{D^2 })$ are slightly different from that of hydrogen spectrum, because

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

Answer 1

Answer: (C)

the masses of the two nuclei are different

Answer 2

Answer (c) the masses of the two nuclei are different