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23-09-2022
Chemistry

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5. Use the periodic table above to determine which of the following
elements has 4 valence electrons as a neutral atom. (1 pt)
O
O Lithium (Li, #3)
O
Silicon (Si, #14)
O Sulfur (S, #16)
Magnesium (Mg, #12)
Most hydrogen (H, #1) atoms have a mass of 1. How many protons

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