Answer:
Ionic compounds are made up of ions, which are charged particles formed when an atom (or a collection of atoms in the case of polyatomic ions) gets or loses electrons.
A positively charged ion is referred to as a cation.
A negatively charged ion is known as an anion.
When elements share electrons in a covalent link to create molecules, they are called covalent or molecular compounds. Electrically, molecular molecules are neutral.
When a metal reacts with a nonmetal, ionic compounds are created (or a polyatomic ion). When two nonmetals react with each other, covalent compounds are created. Because hydrogen is a nonmetal, binary molecules containing it are almost always covalent. This is a covalent bond, or an atom-to-atom exchange of electrons. Covalent bonding is most commonly found between nonmetals. The type of link that holds the atoms in a polyatomic ion together is covalent bonding.
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