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# What is the electron configuration of sodium ion?

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## Electronic configuration: The arrangement of electrons into the orbitals of an atom using some fundamental principle is called its electronic configuration.Electronic configuration of Sodium $\left(\mathrm{Na}\right)$:Sodium is an alkali metal having atomic number 11.Therefore, the electronic configuration will be $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{1}$.Electronic configuration of Sodium-ion $\left({\mathrm{Na}}^{+}\right)$:The sodium atom loses one electron to attain a noble gas configuration and form a sodium ion.Therefore, the electronic configuration for sodium-ion will be $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}$.

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