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A lithium atom has an atomic number of 3 and a mass of 7. The number of electrons which it has in the 1st shell (principal energy level) is ?
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Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?
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Use examples from the article to explain one positive and one negative effect that chemistry has had on society.
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Which sample at stp has the same number of atoms as 18 liters of ne at stp
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A lithium atom has an atomic number of 3 and a mass of 7. The number of electrons which it has in th...
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