(C) The atomic number of element $X$ is $7.$ Its electronic configuration is $1s^2 2s^2 2p^3,$ which means it has $5$ valence electrons. According to

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(C) The atomic number of element $X$ is $7.$ Its electronic configuration is $1s^2 2s^2 2p^3,$ which means it has $5$ valence electrons. According to Lewis dot structure rules,the valence electrons are represented by dots around the symbol. For $5$ valence electrons,the symbol is represented as $\cdot \dot{X}:$

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

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If the atomic number of element $X$ is $7,$ the best electron dot symbol for the element is

A
$X.$
B
$\cdot X.$
C
$\cdot \dot{X}:$
D
$:\ddot{X}:$

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Structure of Atom

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Quantum number, Electronic configuration and Shape of orbitals

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If the atomic number of element $X$ is $7,$ the best electron dot symbol for the element is

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