Question

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Answer 1

the answer to this question is A or D

Answer 2

Hey There,

In Lewis Structure, the valence electrons are shown as dots.

Here, there are 2 valence electrons for Ca (Calcium)

This means that Valency of Ca is 2. Ca will prefer to lose 2 electrons.



Coming to O (Oxygen). There are 6 valence electrons in O. We know that instead of losing 6 electrons, it is much easier to gain 2 electrons to complete the octet.

So, Valency of O is also 2.


Now, it is easier to see that the two electrons lost by Calcium will be simply gained by Oxygen.

In other words, compund formed would be CaO , where both are in the same proportion.

Thus, your answer is Option A. 1:1


Hope it helps
Purva
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