What is the electronic configuration of sodium ion?

Answer 1

Look at your Periodic Table.....

For sodium, #Z=11#, i.e. #1s^(2)2s^(2)2p^(6)3s^(1)#.

If the metal is IONIZED, we gets.....#1s^(2)2s^(2)2p^(6)#, and this is a NEON core, which we could represent as #{1s^(2)2s^(2)2p^(6)}^+#, or #[Ne]^+#. And thus the ion has the electronic configuration of the LAST Noble Gas, i.e. neon....many metal ions share this configuration.....#Mg^(2+)#, #Al^(3+)#....

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Answer 2

Natalie Anton

A sodium ion (Na+) has the electronic configuration 1s² 2s² 2p⁶.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.