(B) The atomic number of the element is $14$,which corresponds to Silicon $(Si)$.The electronic configuration of $Si$ $(Z=14)$ is $1s^2 2s^2 2p^6 3s^2

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(B) The atomic number of the element is $14$,which corresponds to Silicon $(Si)$.The electronic configuration of $Si$ $(Z=14)$ is $1s^2 2s^2 2p^6 3s^2 3p^2$.According to Hund's rule of maximum multiplicity,the two electrons in the $3p$ subshell occupy separate orbitals with parallel spins.Therefore,there are $2$ unpaired electrons in the $3p$ subshell.

Class 11 Chemistry Structure of Atom Quantum number, Electronic configuration and Shape of orbitals

Easy

The atom of the element having atomic number $14$ should have:

A
One unpaired electron
B
Two unpaired electrons
C
Three unpaired electrons
D
Four unpaired electrons

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Structure of Atom

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Quantum number, Electronic configuration and Shape of orbitals

Energy of atomic orbitals in a particular shell is in the order

Medium

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For the configuration shown,which rule is violated?

Easy

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The set of quantum numbers $n = 3$,$l = 0$,$m = 0$,$s = -1/2$ belongs to the element

Easy

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What is the maximum number of electrons that can be associated with the following set of quantum numbers?
$n = 3, l = 1$ and $m = -1$

DifficultNEET 2013

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For principal quantum number $n = 4$,the total number of orbitals having $l = 3$ is:

MediumAIIMS 2004

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The atom of the element having atomic number $14$ should have:

Similar Questions

Energy of atomic orbitals in a particular shell is in the order

For the configuration shown,which rule is violated?

The set of quantum numbers $n = 3$,$l = 0$,$m = 0$,$s = -1/2$ belongs to the element

What is the maximum number of electrons that can be associated with the following set of quantum numbers?$n = 3, l = 1$ and $m = -1$

For principal quantum number $n = 4$,the total number of orbitals having $l = 3$ is:

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What is the maximum number of electrons that can be associated with the following set of quantum numbers?
$n = 3, l = 1$ and $m = -1$