What is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$ $1s^(2)2s^(2)2p^(6)3s^1$ the electron configuration for?

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What is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$ $1s^(2)2s^(2)2p^(6)3s^1$ the electron configuration for?

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Answer 1 · 2018-06-12T17:41:42

Sodium (Na)

Explanation:

The outer electrons are on the 3rd energy level sub-shell (due to the $3 s^{1}$ $3s^{1}$ Thus we can deduce that the element is in the third period of the periodic table.

There are 1 electrons in total in the final sub-shell (adding all the powers of the 3'rd level)

This means it's in group 1.

From this we can deduce it being Na (Sodium)

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What is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$ $1s^(2)2s^(2)2p^(6)3s^1$ the electron configuration for?

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