Which of the following is not a property of ionic compounds?
1
The melting point and boiling points of these compounds are lower than those of covalent compounds.
2
These compounds conduct electricity in their molten state and in aqueous solutions.
3
These compounds are generally soluble in water but are insoluble in organic solvents such as ether, alcohol, carbon tetrachloride etc.
4
They are crystalline solids.