Question

what is it called when an atom gains AND loses electrons

Answer 1

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Atoms of elements can lose or gain electrons making them no longer neutral, they become charged. A charged atom is called an ion. ... In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons).

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Answer 2

Answer:

Atoms of elements can lose or gain electrons making them no longer neutral, they become charged. A charged atom is called an ion. When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons).

Metals (left side of periodic table) will lose electrons and form positive ions when they react, and nonmetals (right side of periodic table) will gain electrons and form negative ions when they react. An ion is represented by adding a positive or negative sign in superscript to the chemical symbol for the atom.

Some simple examples:

Atom symbol Ion symbol

Potassium K K+

Bromine Br Br-

One positive charge shows that the atom has lost one electron, and one negative charge shows that the atom has gained one electron. Charges of up to + or - 3 or 4 but only for certain atoms.

Explanation:

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