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Bohr's Model Of An Atom MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET
Quick Facts
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Radius, velocity and the energy of nth Bohr orbital is considered one the most difficult concept.
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40 Questions around this concept.
Solve by difficulty
Which of the following is not a correct value of angular momentum in any shell of an atom
Which of the following statements in relation to the hydrogen atom is correct?
Energy of an electron is given by ,Wavelength of light required to excite an electron in a hydrogen atom from level n = 1 to n = 2 will be:
(h=6.6210-34Js and c = 3.0
108 ms-1)
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Calculate the energy in joule corresponding to light of wavelength 45 nm : (Planck's constant h = 6.63 x 10-34 Js;
speed of light c = 3 x 108 ms -1)
According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
The energies E1 and E2 of the two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e
If m and e are the mass and charge of the revolving electron in the orbit of radius r for hydrogen atom, the total energy of the
revolving electron will be :
Root mean square velocity, average velocity, and most probable velocity of oxygen as is 1500m/s at the temperature of
Concepts Covered - 2
Bohr’s Model for Hydrogen Atom
Bohr's model :
1. Force of attraction between the nucleus and an electron is equal to the centripetal force.
2. mvr= nh/2 , n = principal quantum number.
3. Energy can be absorbed or emitted when electron transfer orbit
Bohr’s Model for Hydrogen Atom/Hydrogen-like atoms :
The frequency of radiation (ν) absorbed or emitted when electron jumps between two stationary states that differ in energy by ∆E, is given by:
E2 is higher energy state and E1 is lower energy state
Radius, velocity and the energy of nth Bohr orbital
Bohr radius of nth orbit:
where Z is atomic number
Velocity of electron in nth orbit:
where z is atomic number
Total energy of electron in nth orbit:
Where z is atomic number
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Bohr’s Model for Hydrogen Atom
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