Question

The wavelengths involved in the spectrum of deuterium are slightly different from that of hydrogen spectrum because-
1).Size of two nuclei are different
2).Nuclear forces are different in two cases
3).Masses of two nuclei are different
4).Attraction between the electron and the nucleus is different ...

Answer 1

@priyar plss..help

Answer 2

@Michele_laino sir pls help

Answer 3

@Vincent-Lyon.Fr sir pls help

Answer 4

i think option C is correct !

Answer 5

because ENERGY DIFFERENCE is dependent on MASS OF NUCLEI.

Answer 6

Can u plss give the relation?

Answer 7

N energy difference between two energy states is given by Rz^2(1/n1^2-1/n2^2) in case of hydrogen like species spectrum....

Answer 8

R depends on MASS

Answer 9

Sure...???

Answer 10

Lemme check then....

Answer 11

sure

Answer 12

Value of R comes out to be 2mπ^2k^2e^4/h^2

Answer 13

i don't remember the exact value but i knew it depends on mass as you can see

Answer 14

Well , thanks @mayankdevnani it's correct the expression that i gave n the ans u proposed....

Answer 15

alright !
Thumbs Up :)

Answer 16

I think it is since the masses of the two nuclei are different.
The problem in writing the energy leves of a system of a hydrogen like atom is a two-body problem, so it involves the consideration of the reduced \(\mu\) mass of such system:
\[\huge \frac{1}{\mu } = \frac{1}{{{m_e}}} + \frac{1}{M}\]
where \(m_e\) is the mass of the electron, and \(M\) is the mass of the nucleus of such hydrogen-like atom

Answer 17

of course, the reduced mass changes, when we change the hydrogen-like atom type