In the formation of compound between two atoms a and b, a loses two electrons and b gains one electron.
(i)what is the nature of bond between a and b ? (ii) suggest the formula of the compound formed between a and b. on similar lines explain the formation of mg cl2 molecule.common salt conducts electricity only in the molten state. why ? why is melting point of nacl high
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Explanation:
An atom of A loses two electrons and an atom of B gains an electron. So the second electron is gained by another atom of B.
The nature of bond between A and B will be IONIC, as complete transfer of electrons takes place. Ionic compound is formed.
Compound: A B₂
This compound in molten state or in aqueous solutions dissociates into ions A²⁺ and B⁻. These ions travel from anode to cathode or vice versa. So the liquid conducts electricity as ions can travel in a liquid.
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