Question

write two differeence between electrovalent and covalent

Answer 1

Hey Friend,

Ionic / Electrovalent Compounds

1. Strong forces of Attraction.
2. Electrostatic forces
3. Non-volatile.
4. High melting and boiling points.
5. Good conductors of heat and electricity.
6. Can be electrolyzed in molten or aqueous state.
7. Soluble in water
8. Insoluble in organic solvents
9. High speed ionic reactions
10. Electrolytic Dissociation [NaCl ---> Na+  +  Cl- ]

Covalent Compounds

1. Weak forces of Attraction.
2. Van der Waal's forces
3. Volatile.
4. Low melting and boiling points.
5. Bad conductors of heat and electricity.
6. Only Polar Covalent compounds can be electrolyzed.
7. Insoluble in water
8. Soluble in organic solvents
9. Slow speed ionic reactions
10. Ionisation [HCl ---> H+  +  Cl- ]

Hope it helps!

Answer 2

Heya......

Rajdeep here..!!..!!

What are the differences between Electrovalent (Ionic) and Covalent (molecular) Bonds?

Here's your answer:

#1. Electrovalent compounds constitute of only ions. In these compounds, there are strong electrostatic forces of attraction. The ions are linked by strong coulomb forces.

Covalent compounds constitute of molecules. Two or more non metals combine to form a covalent bond, there is no participation of any metal.


#2. Since electrovalent compounds comprises ions which are attracted and held strongly, a huge amount of (heat) energy is required to break them. Hence, the melting points and boiling points of these compounds are generally high.

Covalent compounds comprises molecules, which are not so strongly linked. Hence, their melting and boiling points are low.

#3. Since, the electrovalent compounds constitute ions, when they dissolve in water, due to dielectric constant power of water, the ions split, due to which they can conduct electricity in their aqueous solutions.

The covalent compounds on the other hands, does not contain any ions, due to which, they cannot conduct electricity, even in their aqueous or fused state.
[Note: Polar covalent compounds like HCl or NH₃ can ionize in water and can conduct electricity].


#4. The Electrovalent compounds, having ions, show rapid reaction; whereas the rate of reaction of covalent compounds is comparatively much slower.

#5. As water is a polar compound, it decreases the electrostatic forces of attraction, resulting in free ions in aqueous solutions, hence, the electrovalent compounds are soluble in water.
Covalent compounds do not dissolve in water.

#6. Some electrovalent compounds are Caesium Fluoride, Sodium Chloride, Mercuric iodide, etc.

Non polar covalent compounds are Carbon tetrachloride, methane, ethane, etc.

Polar covalent compounds are hydrogen chloride, ammonia, etc.


Hope my answer is satisfactory....
Thanks!!