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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.
An ionic compound is a compound held together by ionic bonds. Examples of ionic compounds include pyrite, FeS2. Remember that an ionic bond is formed through the transfer of electrons. These compounds are usually formed between metals and non-metals.