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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.
- Write the formula of the compound formed.
- Which nearest inert gas electronic configuration will element X and Y acquire.
- Show by orbital diagram the formation of the compound between X and Y.
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Solution
Element X has 2 electrons in its M shell.
The electronic configuration would be 2, 8, 2.
So, element X is Mg (12).
Element Y has 7 electrons in its third orbit.
The electronic configuration would be 2, 8, 7.
So, element Y is Cl (17).
- MgCl2
- The nearest inert gas electronic configuration for element X is 2,8, while that for element Y is 2,8,8.
- Orbital diagram showing the formation of the compound between X and Y:
Magnesium chloride:
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