Q. The wavelengths involved in the spectrum of deuterium ${(\ }_{1}^{2}D)$ are slightly different from that of hydrogen spectrum, because
A) The attraction between the electron and the nucleus is different in the two cases
B) The size of the two nuclei are different
C) The nuclear forces are different in the two cases
D) The masses of the two nuclei are different
Explanation
The correct answer is Option D: The masses of the two nuclei are different.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.