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buffet55 buffet55
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11 years ago
Calcium has two valence electrons, how can i tell if calcium gains or looses electrons to form stable octect?
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wrote...
11 years ago
Calcium is a metal, and metals usually lose electrons to form a stable octet.

This is because it's easier for Calcium to lose TWO electrons, than gain SIX electrons.

To form a stable octet, atoms need eight valence electrons.
wrote...
11 years ago
Calcium wants to end up with a complete outer ring of electrons.  It can do that by gaining six electrons or by losing two.  Losing two is easier.
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