Why was a change in the Bohr Model of atom required? Due to which important development$(s)$,was the concept of movement of an electron in an orbit replaced by the concept of probability of finding an electron in an orbital? What is the name given to the changed model of atom?
(N/A) The Bohr model failed because it treated the electron as a particle moving in well-defined circular orbits,which requires knowing both the exact position and velocity of the electron simultaneously.
This violates the $Heisenberg$ uncertainty principle,which states that it is impossible to determine both the position and momentum of a subatomic particle simultaneously.
Additionally,the Bohr model did not account for the wave-particle duality of matter.
The concept of an orbit was replaced by the concept of an orbital (a region of probability) due to two major developments:
$1$. The de-Broglie concept of the dual nature of matter.
$2$. The $Heisenberg$ uncertainty principle.
The new model is known as the $Quantum$ $Mechanical$ model of the atom.
This violates the $Heisenberg$ uncertainty principle,which states that it is impossible to determine both the position and momentum of a subatomic particle simultaneously.
Additionally,the Bohr model did not account for the wave-particle duality of matter.
The concept of an orbit was replaced by the concept of an orbital (a region of probability) due to two major developments:
$1$. The de-Broglie concept of the dual nature of matter.
$2$. The $Heisenberg$ uncertainty principle.
The new model is known as the $Quantum$ $Mechanical$ model of the atom.
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Similar Questions
$A$ ball weighing $10 \, g$ is moving with a velocity of $90 \, ms^{-1}$. If the uncertainty in its velocity is $5 \, \%$,then the uncertainty in its position is ....... $\times 10^{-33} \, m$. (Rounded off to the nearest integer) [Given : $h = 6.63 \times 10^{-34} \, Js$]
Medium
View Solution"It is impossible to determine simultaneously the exact position and exact momentum of an electron." This statement is called:
If a proton is accelerated to a velocity of $3 \times 10^7 \text{ ms}^{-1}$ which is accurate up to $\pm 0.5 \%$,then the uncertainty in its position will be $\ldots \ldots \ldots$ [mass of proton $= 1.66 \times 10^{-27} \text{ kg}$,$h = 6.6 \times 10^{-34} \text{ Js}$]
Given below are two statements:
Statement $I:$ According to Bohr's model of hydrogen atom,the angular momentum of an electron in a given stationary state is quantised.
Statement $II:$ The concept of electron in Bohr's orbit,violates the Heisenberg uncertainty principle.
In the light of the above statements,choose the most appropriate answer from the options given below:
Statement $I:$ According to Bohr's model of hydrogen atom,the angular momentum of an electron in a given stationary state is quantised.
Statement $II:$ The concept of electron in Bohr's orbit,violates the Heisenberg uncertainty principle.
In the light of the above statements,choose the most appropriate answer from the options given below:
When uncertainty in position and momentum are equal,then the uncertainty in velocity is
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