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Atomic Structure

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Q JEE MAIN 2021
According to Bohr's atomic theory :-
(1) Kinetic energy of electron is $\propto \frac{\mathrm{Z}^2}{\mathrm{n}^2}$.
(2) The product of velocity (v) of electron and principal quantum...
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Q JEE MAIN 2021
When light of wavelength 248 nm falls on a metal of threshold energy 3.0 eV, the de-Broglie wavelength of emitted electrons is _______ Å. (Round...
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Q JEE MAIN 2021
A proton and a $\mathrm{Li}^{3+}$ nucleus are accelerated by the same potential. If $\lambda_{\mathrm{Li}}$ and $\lambda_P$ denote the de Broglie wavelengths of $\mathrm{Li}^{3+}$ and proton...
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Q JEE MAIN 2021
Which of the following forms of hydrogen emits low energy $\beta^{-}$particles?
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Q JEE MAIN 2021
The orbital having two radial as well as two angular nodes is -
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Q JEE MAIN 2021
What is the major product formed by HI on reaction with
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Q JEE MAIN 2021
The product formed in the first step of the reaction of with excess $...
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Q JEE MAIN 2021
In which of the following pairs, the outer most electronic configuration will be the same?
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Q JEE MAIN 2021
The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below:
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Q JEE MAIN 2022
Consider an imaginary ion ${ }_{22}^{48} \mathrm{X}^{3-}$. The nucleus contains ' a ' $\%$ more neutrons than the number of electrons in the ion. The...
JEE Main Chemistry Medium
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