*An atom with a charge (having and unequal number of protons and electrons) is called an ion. If it has more electrons then protons it is negative and if it has more protons then electrons then it is positive
An ion is an electrically charged particle consisting of an atom or molecule that is not electrically neutral. In the case in which an atom loses 2 electrons, its charge is positive and is symbolized as +2.
For examples common ions that have lost two electrons are: Fe2+, Mn2+.
