Calcium oxide is formed by loosing of electrons to oxygen atoms, the calcium atom has the number of valence electrons as (a) three (b) one (c) four (d) two
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Answer:
two valence
Explanation:
The oxygen atom requires two more electrons to attain the nearest noble gas configuration. In this, the calcium can lose two electrons and oxygen accept two electrons. Thus calcium gives its two valence electrons to oxygen and forms an ionic bond with oxygen.
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