electrons are bombarded to excite hydrogen atoms and six

Electrons are bombarded to excite hydrogen atoms and six spectral lines are observed. If $${E_g}$$ is the ground state energy of hydrogen, the minimum energy the bombarding electrons should posses is

A. $$\frac{{8{E_g}}}{9}$$

B. $$\frac{{15{E_g}}}{16}$$

C. $$\frac{{35{E_g}}}{36}$$

D. $$\frac{{48{E_g}}}{49}$$

Answer : $$\frac{{15{E_g}}}{16}$$

Solution :
To obtain 6 spectral line, as electron must be excited to fourth orbit with energy $$\frac{{{E_g}}}{{16}},$$ so that the difference is $$\frac{{15\,{E_g}}}{{16}}.$$

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

A. 60

B. 32

C. 4

D. 64

View Answer

Releted Question 2

Consider the spectral line resulting from the transition $$n = 2 \to n = 1$$ in the atoms and ions given below. The shortest wavelength is produced by

A. Hydrogen atom

B. Deuterium atom

C. Singly ionized Helium

D. Doubly ionised Lithium

View Answer

Releted Question 3

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

A. 38.2

B. 49.2

C. 51.8

D. 79.0

View Answer

Releted Question 4

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

A. 1.51

B. 13.6

C. 40.8

D. 122.4

View Answer

Electrons are bombarded to excite hydrogen atoms and six spectral lines are observed. If $${E_g}$$ is the ground state energy of hydrogen, the minimum energy the bombarding electrons should posses is

Releted MCQ Question on
Modern Physics >> Atoms And Nuclei

If elements with principal quantum number $$n > 4$$ were not allowed in nature, the number of possible elements would be

Consider the spectral line resulting from the transition $$n = 2 \to n = 1$$ in the atoms and ions given below. The shortest wavelength is produced by

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

Practice More Releted MCQ Question on
Atoms And Nuclei

Practice More MCQ Question on Physics Section

Electrons are bombarded to excite hydrogen atoms and six spectral lines are observed. If $${E_g}$$ is the ground state energy of hydrogen, the minimum energy the bombarding electrons should posses is

Releted MCQ Question on Modern Physics >> Atoms And Nuclei

If elements with principal quantum number $$n > 4$$ were not allowed in nature, the number of possible elements would be

Consider the spectral line resulting from the transition $$n = 2 \to n = 1$$ in the atoms and ions given below. The shortest wavelength is produced by

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

Practice More Releted MCQ Question on Atoms And Nuclei

Practice More MCQ Question on Physics Section

Releted MCQ Question on
Modern Physics >> Atoms And Nuclei

Practice More Releted MCQ Question on
Atoms And Nuclei