Draw the structure of of (a) Cl- (b) Mg2+. ( Cl-17, Mg-12)
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Mg forms ionic bond to Cl by donating its valence electrons to two Cl atoms.
The electron configuration of Mg is [Ne]3s². It can achieve a complete octet by losing its two valence electrons to form Mg2+
The electron configuration of Cl is [Ne]3s²3p⁵. It can achieve an octet by gaining one valence electron to form Cl⁻
The oppositely charges of the magnesium and chloride ions attract each other and form ionic bonds.
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