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Properties of Ionic compound

An ionic bond...

Question

An ionic bond is a strong electrostatic force of attraction. Which of the following properties of ionic compounds is not related to the above characteristic?

A

Hard and brittle solids

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B

Electrical conductivity

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C

High density

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D

High melting point

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Solution

The correct option is A Electrical conductivity
Ionic compounds contains positive and negative ions (cations and anions). In liquid state (as molten liquid or aqueous solution) these ions are freely moving, hence it is able to conduct electricity.
In solid (crystal) state these ions are not freely moving, hence it is not able to conduct electricity. Thus electrical conductivity is not related to forces of attraction property.

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Q. Chemical compounds in which anions and cations are held together by electrostatic force of attraction are known as ionic compounds. Cations and anions are charged species which are formed by losing and gaining electron(s) respectively to attain the nearest noble gas configuration or stability. Usually metals lose their valence electrons to form cations while non-metals accept electrons and form anions. Being held by a strong electrostatic force of attraction between ions, ionic compounds have high melting and boiling points.

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