Can molecules made from the same atom form ionic bonds. why?

Considering the definition of ionic bond, molecules cannot form ionic bonds from the same atom because ionic bonds form when atoms with opposite charges bond with one another. In ionic compounds, metal elements are willing to donate an electron while nonmetals are willing to take it.

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.

In other words, ionic bonding is based on the transfer of electrons, thereby forming electrically charged atoms, called ions. The positive ions are called cations, and the negative ions are called anions. Once the cations and anions are formed, electrostatic attractive forces build up between them, leading to bond formation.

That is, an ionic compound is made up of positive and negative ions, united by electrostatic forces of attraction.

So, molecules cannot form ionic bonds from the same atom because ionic bonds form when atoms with opposite charges bond with one another. In ionic compounds, metal elements are willing to donate an electron while nonmetals are willing to take it.

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No. Ionic bonds form when atoms with opposite charges bond with one another. Atoms develop charges by gaining or losing electrons. For a given element, the atoms will (usually) have a tendency to gain OR lose a particular number of electrons, so they can only form ions of a particular charge that is either positive or negative.

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