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OpenStudy (anonymous):
How many electrons does calcium have to give up in order to achieve noble-gas electron configuration? A. 5 B. 4 C. 2 D. 3 E. 1
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OpenStudy (anonymous):
C . total no of electron for calcium is 20...to acieve stable octect electron which is noble gas,it should give up 2 electron,so that it will become 18e :)
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