Atomic Structure

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Q JEE MAIN 2024

The ionization energy of sodium in $\mathrm{kJmol}^{-1}$. If electromagnetic radiation of wavelength 242 nm is just sufficient to ionize sodium atom is _______ .

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Q JEE MAIN 2024

The correct set of four quantum numbers for the valence electron of rubidium atom (Z=37) is:

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Q JEE MAIN 2024

Given below are two statements: Statement-I : The orbitals having same energy are called as degenerate orbitals. Statement-II : In hydrogen atom, 3p and 3"...

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Q JEE MAIN 2025

Which of the following statements are true? (A) The subsidiary quantum number $l$ describes the shape of the orbital occupied by the electron. (B) is...

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Q JEE MAIN 2024

The number of electrons present in all the completely filled subshells having $\mathrm{n}=4$ and $\mathrm{s}=+\frac{1}{2}$ is (Where $\mathrm{n}=$ principal quantum number and $\mathrm{s}=$ spin quantum...

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Q JEE MAIN 2025

For hydrogen like species, which of the following graphs provides the most appropriate representation of E vs Z plot for a constant n ?[0pt] [...

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Q JEE MAIN 2025

Given below are two statements :[0pt] Statement (I): It is impossible to specify simultaneously with arbitrary precision, both the linear momentum and the position of...

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Q JEE MAIN 2025

Which of the following statements are correct, if the threshold frequency of caesium is $5.16 \times {10^{14}}\;{\rm{Hz}}$ ?