1
Question
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been accelerated from rest through a potential difference of 12.75V. In the emission spectrum one cannot observe any line of
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been accelerated from rest through a potential difference of 12.75V. In the emission spectrum one cannot observe any line of
Open in App
Solution
The correct option is C Pfund series
Energy of electron stream =12.75eV.The ground state electron having energy −13.6eV will acquire this energy and have total energy =13.6+12.75=−0.85eV.This corresponds to the energy of electron in the 4th orbit. So, it will radiate energy when electron jumps from 4th orbit.Hence, Pfund series cannot be observed.
Energy of electron stream =12.75eV.
The ground state electron having energy −13.6eV will acquire this energy and have total energy =13.6+12.75=−0.85eV.
This corresponds to the energy of electron in the 4th orbit. So, it will radiate energy when electron jumps from 4th orbit.
Hence, Pfund series cannot be observed.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
