GENERAL KNOWLEDGE

Detailed explanation-1: -Thus, an atom that gains electrons becomes a negatively-charged ion called an anion.

Detailed explanation-2: -Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

Detailed explanation-3: -Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons. By adding one more electron we get a negatively charged Cl-ion with a net charge of-1.

Detailed explanation-4: -If atoms lose electrons, they become positive ions or cations. If atoms gain electrons, they become negative ions or anions.

Detailed explanation-5: -When an atom loses or gains an electron, ions are formed. If an atom loses electron it forms positive charge and if gains electron it forms negative charge. An atom which carries charge on it is known as ion.