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Solution


Q.

Reaction between X and Y forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z
1 Has high melting point  
2 Has low melting point  
3 Conducts electricity in molten state  
4 Occurs as solid  

Ans.

(2)

Reaction between compound X and Y forms compound Z. In the reaction, X loses electron and Y gains electron which means compound Z is a crystalline solid as ionic or electrovalent bond is formed between X and Y. As compound Z is a crystalline solid, it has high melting point and it conducts electricity in the molten state. Thus, the property not shown by Z is that it has low melting point.