Question

state any two characteristics properties of ionic compounds

Answer 1

Hey !!

  CHARACTERISTICS OF IONIC COMPOUNDS

• Ionic compounds are crystalline in nature. Their consistuent unit or ions. These ions are arranged together in regular way in an ionic lattice. Eg:- In NaCl lattice each sodium ionic bonded with six Cl⁻ ions and each Cl⁻ ion is surrounded by six Na⁺ ions.
• Ionic compounds are hard and brittle in nature due to the strong force of attraction between oppositely charged ions. These solids have low volatility, high stability and high density.
• These have high melting and boiling points due to the presence of powerful electrostatic force between the ions.
• These are good conductors of heat and electricity in molten state or aqueous medium due to the mobility of ions.
• These are soluble in polar solvents like water but insoluble in non-polar solvents like CCl₄ , C₆H₆ etc.
• Ionic compounds form ions in solution, hence exhibit ionic reactions which are quite fast and instantaneous.
• The bond in ionic compounds is not rigid and non-directional, so these do not show isomerism.

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Answer 2

■ Compounds which are formed by sharing of electron are called covalent compounds.

■ they are different from ionic compounds because they do not have ions.

■ Ionic compounds are formed by transfer of electrons.

Properties

♤ 1. Low melting and boiling points

♤ 2. Do not conduct electricity in molten state or in an aqueous solution.

♤ 3. They are mostly insoluble in water but soluble in organic solvents.