Covalent compounds (a) (a) have high melting and boiling point (b) are mostly soluble in water (c) are formed between atoms of metals and non-metals (d) are formed by the sharing of electrons in the bonding atoms.
Correct option is D) Covalent compounds usually have low melting points. An exception to this includes molecules of silica and diamonds that have a high melting point. These compounds have low boiling points. This can be attributed to their weak force of attraction between the various bonded atoms. Van Der Waals forces bind these atoms. Covalent compounds do not possess polar characteristics as a general property. Therefore, these compounds are insoluble in water. Covalent compounds are formed by the sharing of electrons in two nonmetals. thus , the correct answer is D
