explain the formation of ionic bond between calcium(2,8,8,2) and chlorine (2,8,7)
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This would make calcium a positive ion with the charge of 2+. Because each chlorine atom gained an electron, they each have 17 protons and 18 electrons. This makes each chloride a negative ion with a charge of −1. Oppositely charged ions attract each other, forming an ionic bond.
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An ionic bond is formed in a molecule when one atom in the molecule transfers one or more electrons from itself to its neighbouring atom in the molecule.
In this molecule, calcium transfers its two electrons to its two neighbouring chlorine atoms and hence CaCl 2 is an ionic compound.
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