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Physics
The wavelengths involved in the spectrum of deuterium (21 D) are slightly different from that of hydrogen spectrum, because
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Q. The wavelengths involved in the spectrum of deuterium $(^2_1 D)$ are slightly different from that of hydrogen spectrum, because
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Atoms
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
Solution:
Correct answer is (c) masses of the two nuclei are different