define ions and explations
Answers
An ion can be defined as a chemical species which holds a positive or negative charge of some magnitude. The term ‘ion’ can be used to refer to atoms or molecules that have non-zero net charges associated with them. Therefore, all ions have either a greater number of protons than electrons in their overall atomic or molecular structure, or they have a greater number of electrons than protons in their atomic/molecular structures. The ions that contain a greater number of protons than electrons are known to hold a net positive charge. These ions are commonly referred to as cations. On the other hand, the ions that contain a greater number of electrons than protons are known to hold a net negative charge. These ions are commonly known as anions.
It is important to note that the electrostatic forces of attraction that can arise between positively charged cations and negatively charged anions are the driving force behind the formation of ionic bonds. When two oppositely charged ions form an ionic bond with each other, the resulting type of compound is commonly referred to as an ionic compound.
If an ion is made up of only one type of atom (each holding some net charge, positive or negative), it can be referred to as an atomic ion or a monoatomic ion. On the other hand, if an ion is made up of two or more atoms, it can be referred to as a polyatomic ion or a molecular ion.
Answer:
An ion is a positively and negatively charged atom. An ion is formed by the loss ir gain of electrons by the atom.So it contains unequal number of electrons & protons