Answer: Option (C) is the correct answer.
Explanation:
A compound that is formed by transfer of electrons results in the formation of an ionic bond and it is known as an ionic compound.
For example, calcium has 2 valence electrons and bromine has 7 valence electrons. So, in order to complete their octet calcium donates its two valence electrons to two bromine atoms.
Therefore, it results in the formation of an ionic compound [tex]CaBr_{2}[/tex].
In an ionic compound there is partial positive charge on the cation and partial negative charge on the anion.
Whereas a compound formed by sharing of electrons is known as a covalent compound.
For example, [tex]CF_{4}[/tex], [tex]NH_{3}[/tex] and [tex]CO_{2}[/tex] are all covalent compounds.
Thus, we can conclude that [tex]CaBr_{2}[/tex] is the compound that is held together by the electrostatic force between two ions.
