An atom that has more electrons than protons is a(n) ________ ion.
An atom with more electrons than protons is called a negative ion. This occurs when an atom gains additional electrons, creating an overall negative charge. Neutral atoms have equal numbers of protons and electrons.
In chemistry, an atom that has more electrons than protons is known as a negative ion or anion. This occurs because ions are formed when atoms gain or lose electrons. When an atom gains electrons, it results in a surplus of negative charge, outnumbering the positive charge of protons.
In contrast, if an atom had more protons than electrons, it would be a positive ion or cation. An atom is neutral when the number of electrons and protons is equal, thus having no overall charge. The term polyatomic refers to ions made of more than one atom, and does not directly apply to the question at hand.
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