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At some point, the electronegativity difference is so large that ions are simply formed. A molecular compound is formed by sharing of electrons. Depending on the electronegativity, molecular compounds are either polar or non-polar. These kinds of bonds are called covalent bonds.Due to the presence of an actual bond, bonds in a molecular compound are directional-towards the nuclei of the atoms.n a molecular compound, the atoms share electrons to form a compound. The atoms share electrons because they both want to achieve a full octet (8 electrons). In an ionic compound, the atoms transfer electrons to form a compound.
Molecules of compounds:When molecule is formed by the combination of two or more atoms of different elements, it is called the molecule of compound. Example:Molecule of water (H 2 O). Molecule of water is formed by the combination of two hydrogen and one oxygen atoms. Ions: Atoms of several elements exists in the form of ion.