A metal ‘X’ loses two electrons and a non-metal ‘Y’ gains one electron. Show the electron dot structure of compound formed between them. Is it ionic or covalent? Does it have high melting point or low? Will it conduct electricity in solid state or in aqueous solution and why? Will it be soluble in water?
Since X loses two electrons, its valence becomes +2 and it forms the ion of the form 
. Similarly, valency of Y is -1 and its ionic form is 
.
Formation of compound with X and Y
Since compound is formed by ions it is ionic. Ionic compounds are High melting points, are soluble in aqueous solutions because of mobile ions and are soluble in water.
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