Which of These Statements About Covalent Compounds Is Incorrect

Which of these statements about covalent compounds is incorrect ?

A) Covalent bonds involve the combination of two nonmetals.
B) Covalent compounds dissolve in water to form electrolyte solutions.
C) Covalent compounds contain atoms which share electrons to gain stability.
D) Molecules are represented by a specific kind of chemical formula .
E) Electrons in covalent compounds are not always equally shared between atoms.