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Sigma Bond and Pi Bond

An element X ...

Question

An element X has 2 electrons in its M shell, it forms a bond with an element Y which has 7 electrons in its third orbit.
(a) Write the formula of the compound formed.

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Solution

The electronic configuration of X is 2, 8, 2.

So, element X = Mg (12).

The electronic configuration of Y is 2, 8, 7.

So, element Y = Cl (17).

The formula of the compound formed is $X Y_{2}$

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Sigma Bond and Pi Bond

Standard XII Chemistry

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