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5. Give their valence electron with explanation based on your periodic table 6. Determine the atomic and mass ratio of NaCl and calculate how many grams of Na is needed to make a 100 of NaCl 7. Explain how the two atoms bind to form NaCl using their electron dot structure of Na and Cl and give the name of their chemical bond 8. Among the below list of atoms select the ones that have similar chemical properties and explain why based on the use of the periodic table Mg, S, F, Rb, 1, Si
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