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Bohr Model of the Hydrogen Atom for GSEB: 21 solved questions

Real GSEB paper questions on bohr model of the hydrogen atom, part of atoms. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2023. No sign-in needed to read them.

What this topic asks

• Energy levels and ionisation — 13 questions
• Postulates, radius, speed and angular momentum — 6 questions
• Bohr's rules in other systems — 2 questions

All 21 questions with solutions

• If the potential energy of electron in the hydrogen atom is -(ke²)/r, then what is its kinetic energy? GSEB Board July 2015
• The ratio of energies of the electron in the first excited state to its second excited state in a hydrogen at… GSEB Board July 2015
• According to Bohr's hypothesis, the angular momentum of the electron in any stationary orbit of radius r is p… GSEB Board March 2016
• The ionization potentials of hydrogenic ions A and B are V_A and V_B respectively. Now if V_B>V_A, then GSEB Board July 2016
• The radius of the second orbit in an atom of hydrogen is R. What is the radius of the third orbit? GSEB Board July 2017; GSEB Board March 2018
• For the first orbit of hydrogen atom, the minimum excitation potential is V. GSEB Board July 2017
• An electron with energy 12.09 eV strikes a hydrogen atom in its ground state and gives all its energy to the… GSEB Board July 2017
• The ratio of energies of the electron in the second excited state to the first excited state in an H-atom is… GSEB Board July 2018
• If the potential energy of the electron in the hydrogen atom is -(e²)/(4πε₀ r), then what is its kinetic ener… GSEB Board March 2019
• What is the angular momentum of an electron of a Li-atom in the n=5 orbit? GSEB Board March 2019
• 13.6 eV energy is required to separate a hydrogen atom into a proton and an electron. Compute the orbital rad… GSEB Board March 2020
• To excite the hydrogen atom from its ground state to the second excited state, eV energy is required. GSEB Board March 2020
• The velocity of the electron moving around the proton in a hydrogen atom, in an orbit of radius 5.3×10⁻¹¹ m,… GSEB Board August 2020
• The ground state energy of hydrogen atom is -13.6 eV. What are the kinetic and potential energy of the electr… GSEB Board August 2020
• The total energy and kinetic energy of an electron in a hydrogen atom are E and K respectively. Then, GSEB Board July 2021
• Ionisation energy of an electron in third excited state for hydrogen atom is eV. GSEB Board July 2021
• The energy required to excite an electron of the hydrogen atom from its ground state to the second excited st… GSEB Board March 2022
• Which one of the following represents Bohr's radius? GSEB Board July 2022
• If four de Broglie wavelengths fit into the circumference of the orbit of radius r, then λ= . GSEB Board July 2022
• What is the angular momentum of electron of Be³⁺ ion in n=5 orbit? GSEB Board March 2023
• What is the ratio of the total energy of an electron in a hydrogen atom in the first excited state and the th… GSEB Board March 2023