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Gabriella
Chemistry
13 September, 18:06
Why is calcium oxide CaO, and not CaO2?
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Karli Wade
13 September, 18:16
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The Calcium ion is an Alkaline earth metal and wants to give up the 2 s orbital elections and become a + 2 cation.
Oxygen has six valence electrons and is looking to gain two electrons to complete the octet (8) electron count in the valence shell making it a - 2 anion.
When the charges of the Calcium + 2 and the Oxygen - 2 are equal and opposite, the ions for an electrical attraction. (Remember Paula Abdul told us "Opposites Attract")
This one to one ratio of charges makes the formula CaO
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Hill
13 September, 18:21
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Ca’s charge is 2 + and O’s charge is 2-. When you cross the charges it would be Ca2O2 and you would simplify to Ca1O1 and the ones are implied so just CaO
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