Choose the electron configuration for sodium (Na) in both longhand notation and noble-gas notation. A link to the periodic table is provided for you.

Longhand notation is simply the amount of electrons in each P, S and D orbital. The atomic number of sodium is 11 so once you have written it, you can go back and check to see if every electron is accounted for. The longhand notation of sodium is as follows:

1s2 2s2 2p6 3s1

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Explanation:

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1.43 x 10^-11 j the guy commented the awnser just making sure u see it .