Chemistry, 06.07.2019 08:30 jonquil201
What are the rules for writing the symbols of an elements
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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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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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Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved
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What are the rules for writing the symbols of an elements...
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