carlosthenoob03
06.10.2020 •
Chemistry
how do you tell if an element has positive or negative charge. And how do you know when the valence electrons have to be shared or not
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Ответ:
A normal atom has a neutral charge. When you are missing electrons it has a positive charge. When you have extra electron, you have a negative charge. I am not sure what the answer to your second question is, sorry.
Explanation:
Ответ:
28.1 is the answer because a sample of silicon has 3 natural occurring isotopes and the average of them all is 28.1