Question 345: Atoms & Nuclei

Question

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

Accepted Answer

The wavelength of spectrum is given by
$${1 \over \lambda } = R{z^2}\left( {{1 \over {n_1^2}} - {1 \over {n_2^2}}} ight)$$
where $$R = {{1.097 	imes {{10}^7}} \over {1 + {m \over M}}}$$
where $$m=$$ mass of electron
$$M=$$ mass of nucleus.
For different $$M,R$$ is different and therefore $$\lambda $$ is different

Answer

the size of the two nuclei are different

Answer

the nuclear forces are different in the two cases

Answer

the masses of the two nuclei are different

Answer

the attraction between the electron and the nucleus is different in the two cases

Atoms & Nuclei

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

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