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08-10-2021
Chemistry

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How many valence electrons in this electron configuration 1S2 2S2 2P6 3S2

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08-10-2021

Answer:

Explanation:

Electron Configurations

A B

Fluorine 1s2 2s2 2p5

Neon 1s2 2s2 2p6

Sodium 1s2 2s2 2p6 3s1

Magnesium 1s2 2s2 2p6 3s2

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