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Why covalent compounds have low boiling and melting point?????/

 

Hi,


Covalent molecules are made up of electrically neutral molecules. So the force of attraction between the molecules is very low and hence it requires very less energy to break these weak molecular forces and thus low melting and boiling point.

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covalent bond is a bond formation by mutual sharing of electrons

therefore covalent compounds have low MP and BP as they have weak attractive force between their  electrons

 

but if u see in ionic compounds u will find that they have high MP and also high BP because of their strong attractive force

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 coz covalent compunds have a weaker inter molecular force of attraction...but since they have a better chemical bonding...they are said to be more strongly bounded than ionic compounds which have a stronger inter  molecular force of attraction...!!!

hope this helps you..!!! :D

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add this

 

the stronger the attraction the more u need the energy

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 covalent bonds are formed by the sharing of electrons between atoms of two elements due to which their inter molecular forces are not very strong. so they have low boiling and melting points unlike the case in ionic compounds.

hope it helps!!!

cheers!!!

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 It's because of the properties of a covalent bond. 

1. The covalent bond is a compound between two or more non-metals. 
Non-metals have low melting points. 
2. it tends to not form crystals which is crystal lattice. 
It can be easily broken. 
3. The attractions are weak. 
(which can also be the one of the reasons why it isn't in a crystal form.) 
I wish this small words help you. 

As you may recall, ionic compounds have very high melting and boiling points because it takes a lot of energy for all of the + and - charges which make up the crystal to get pulled apart from each other. Essentially, when we have an ionic compound, we need to break all of the ionic bonds in order to make it melt. 
On the other hand, when we have covalent compounds we don't need to break any bonds at all. This is because covalent compounds form distinct molecules, in which the atoms are bound tightly to one another. Unlike in ionic compounds, these molecules don't interact with each other much (except through relatively weak forces called "intermolecular forces"), making them very easy to pull apart from each other. Since they're easy to separate, covalent compounds have low melting and boiling points...
: )..
 



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Covalent compounds are formed by the sharing of electrons, hence the bonding is relatively weak. On the other hand, ionic compounds are formed by the transferring of electrons thus strong electrostatic forces holds the compound together, the strength in these forces co-existing within the ionic compounds require a large amount of energy to break it apart hence boiling and melting points are high.


 

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Covalent compounds are formed by the sharing of electrons, hence the bonding is relatively weak. On the other hand, ionic compounds are formed by the transferring of electrons thus strong electrostatic forces holds the compound together, the strength in these forces co-existing within the ionic compounds require a large amount of energy to break it apart hence boiling and melting points are high.


 

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yeahh datzz right...!!

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 yeahh.... true....!

more d inter ionic force,... more considerable amount of energy (here in d form of heat) will b required 2 break d bond which is vid d case of ionic compound n covalent compounds r vice-versa......!!

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 thank you..

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 becoz dey do not have strong force of attraction between them.........

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becoz the intermolecular force is less in covalent compounds

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 welcome..

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