Number of unpaired electrons in ${\mathrm{N}}^{2+}$ is

Important Questions on Atomic Structure

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The electronic configuration which obeys Hund's rule for the ground state of carbon atom is

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

$Gd\left(64\right)$ has __ unpaired electrons with sum of its spin as  __.

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The maximum number of electrons that can be filled in the shell with the principal quantum number $\mathrm{n}=4$ is

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The total number of orbitals associated with the principal quantum number $5$ is:

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The element with $\mathrm{Z}=120$ (not yet discovered) will be a/an

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Aqueous solution of which of the following salts will not contain ions with the electronic configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^6$ ?

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Which statement is incorrect for the periodic classification of elements?

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The orbital nearest to the nucleus is

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

How many electrons can fit in each orbital for which $\mathrm{n}=3$ and $\mathrm{l}=1$?

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The number of valence electrons in an atom with electronic configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^3$ is

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The group number, number of valence electrons, and valency of an element with atomic number $15,$ respectively, are:

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

If the principal quantum number $\text{n}=6,$ the correct sequence of filling of electrons will be:

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

$4\mathrm{d},\mathrm{ }5\mathrm{p},\mathrm{ }5\mathrm{f}$ and $6\mathrm{p}$ orbitals are arranged in the order of decreasing energy. The correct option is:

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Which one of the following statements is wrong?

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The number of unpaired electrons in ${\mathrm{Ni}}^{2+}$ (atomic number $=28$ ) are

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Which of the following electron is most tightly bound to the nucleus?

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Energy associated with the first orbit of ${\mathrm{He}}^{+}$ is

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The element which readily forms an ionic bond has the electronic configuration

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Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

The number of $\mathrm{d}$-electrons in ${\mathrm{Fe}}^{2+} (\mathrm{Z}=26)$ is not equal to the number of electrons in which one of the following?

EASY

Chemistry>Physical Chemistry>Atomic Structure>Electronic Configuration of Atoms

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?

(At. No. Z = $22$)