Chemistry
Give reasons for the following:
In the formation of MgO the magnesium atom (at. no. 12) loses two electrons from it's valence shell.
Chemical Bonding
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Answer
Electronic configuration of Mg (Z = 12) = 2, 8, 2
Electronic configuration of O (Z = 8) = 2, 6
Mg (metal) has a tendency to lose two valence electrons and attain a stable state (Ne = 2,8). On the other hand, O (non-metal) has a tendency to gain two electron and attain a stable state (Ne = 2,8). Hence, when the two atoms fuse together to form MgO, then Mg loses two electrons and O gains two electrons and they form a electrovalent bond.
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