Question

For which of the following species, the electronic transition from n=5 sate to n=2 state will produce the shortest wavelength in nm?

Answer 1

Answer:

According to Rydberg equation:

λ

1

=R

H

z

2

(1/n

1

2

−1/n

2

2

)

As from the equation, the atomic number and wavelength are inversely related. More the atomic number, the shortest will be the wavelength.

The atomic number of lithium is 3 and is the highest of all. So, this nucleus will have the shortest wavelength.