Atomic Structure

Q JEE MAIN 2023

Number of compounds giving
(i) red colouration with ceric ammonium nitrate and also
(ii) positive iodoform test from the following is
$\_\_\_\_$

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Q JEE MAIN 2023

The number of given orbitals which have electron density along the axis is _______ px, py, pz, dxy, dyz dxz,

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Q JEE-Main_2023

Arrange the following orbitals in decreasing order of energy ?
(A) n = 3, l = 0, m = 0
(B) n = 4, I...

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Q JEE MAIN 2023

Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is _______.

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Q JEE MAIN 2023

The wave function $(\Psi)$ of 2 s is given by $$ \Psi_{2 s}=\frac{1}{2 \sqrt{2 \pi}}\left(\frac{1}{a_0}\right)^{1 / 2}\left(2-\frac{r}{a_0}\right) e^{-r / 2 a_0} $$ At $r=r_0$, radial...

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Q JEE MAIN 2023

Maximum number of electrons that can be accommodated in shell with n = 4 are:

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Q JEE MAIN 2023

The total number of isoelectronic species from the given set is ____.
$\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Al}, \mathrm{Mg}^{2+}, \mathrm{Na}^{+}, \mathrm{O}^{+}, \mathrm{Mg}, \mathrm{Al}^{3+}, \mathrm{F}$

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Q JEE MAIN 2023

The energy of an electron in the first Bohr orbit of hydrogen atom is –2.18×10–18 J. Its energy in the third Bohr orbit is ____.

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