1) Electro valent compounds are compounds formed as a result of loss or gain of electrons between atoms.
2)The properties include:-
a]They exist as ions.
b]The compounds have high melting points due to electrostatic attraction.
c]Ionic compounds are hard and brittle.
3)Covalent compounds are compounds formed by sharing pair of electrons between atoms.
4)The properties include:-
a]They exist as molecules and not ions.
b]They have low melting and boiling points.
5)The two differences between electro valent and covalent compounds are:-
a]Electro valent compounds are soluble in water but insoluble in organic solvents while covalent compounds are not.
b]Electro valent compounds exist as ions while covalent compounds are molecules.
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