Question

What is an ion and how is it formed?

Answer 1

An ion is a charged atom,
ions are formed when an atom loses a proton or electron, thus making the atom either postively charged or negatively charged

Answer 2

Ions are formed when an element loses or gains an electron. A positive ion is formed by the loss of an electron which is itself negative and negative ions are formed by the gain of an electron.

Answer 3

@Abhisar @outofmyvulcanmind Those are both good answers.

Answer 4

Ions are electrically charged particles formed when atoms lose or gain electrons.