Chemistry · 2021
JEE Main · 24 February 2021, Shift 2 · Q31
According to Bohr's atomic theory: (A) Kinetic energy of electron is ∝ (Z^2)/(n^2). (B) The product of velocity (v) of electron and principal quantum…
According to Bohr's atomic theory :
(A)
Kinetic energy of electron is $\displaystyle \propto \frac{\mathrm{Z}^2}{\mathrm{n}^2}$.
(B)
The product of velocity (v) of electron and principal quantum number (n), ‘vn’ $\displaystyle \propto \mathrm{Z}^2$.
(C)
Frequency of revolution of electron in an orbit is $\displaystyle \propto \frac{\mathrm{Z}^3}{\mathrm{n}^3}$.
(D)
Coulombic force of attraction on the electron is $\displaystyle \propto \frac{\mathrm{Z}^3}{\mathrm{n}^4}$.
Choose the most appropriate answer from the options given below :
Official answer
(2)
(A) and (D) only
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.