CBSE BOARD X, asked by rajgupta199918, 21 hours ago

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​

Answers

Answered by muhammedshamaas2008
1

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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