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Question

State which is not a typical property of an ionic compound?
(a) High melting point.
(b) Conducts electricity in molten and in the aqueous solution state.
(c) Are insoluble in water.
(d) Exist as oppositely charged ions even in the solid state.

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Answer

(c) Are insoluble in water

Reason

Ionic compounds are soluble in water. They are insoluble in organic solvents. Water [polar solvent] has a high dielectric constant i.e. capacity to weaken the force of attraction, thus resulting in free ions.
Organic solvents [non-polar] have low dielectric constants and do not cause dissolution.

💡 Some Related Questions

Chemical Bonding

Fill in the blanks with the correct word from the brackets:
(i) The bond between two elements in group 17[VIIA] of the periodic table is likely to be ____ [ionic/covalent].
(ii) In the reaction of Cl2 + 2KI ⟶ 2KCl + I2 the conversion of 2I to I2 is deemed as ____ [oxidation/reduction].
(iii) The covalent molecule containing three single covalent bonds is ____ [water/methane/ammonia].
(iv) The molecule of water combines with a ____ [hydrogen atom/proton/hydrogen molecule] to form a hydronium ion.
(v) For formation of an electrovalent bond between elements ‘X’ and ‘Y’ which are a metal and non-metal respectively, X should have a ____ [high/low] ionization potential and ‘Y’ a ____ [high/low] electron affinity.

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