The transition from the state $$n = 4$$ to $$n = 3$$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from :
A.
$$3 \to 2$$
B.
$$4 \to 2$$
C.
$$5 \to 4$$
D.
$$2 \to 1$$
Answer :
$$5 \to 4$$
Solution :
It is given that transition from the state $$n = 4$$ to $$n = 3$$ in a hydrogen like atom result in ultraviolet radiation. For infrared radiation the energy gap should be less. The only option is $$5 \to 4.$$
Releted MCQ Question on Modern Physics >> Atoms And Nuclei
Releted Question 1
If elements with principal quantum number $$n > 4$$ were not allowed in nature, the number of possible elements would be
An energy of $$24.6\,eV$$ is required to remove one of the electrons from a neutral helium atom. The energy in $$\left( {eV} \right)$$ required to remove both the electrons from a neutral helium atom is
As per Bohr model, the minimum energy (in $$eV$$ ) required to remove an electron from the ground state of doubly ionized $$Li$$ atom $$\left( {Z = 3} \right)$$ is