An ion is an atom or group of atoms in which the number of electrons is different from the number of protons. An ion is an atom or group of atoms in which the number of electrons is different from the number of protons.
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An ion is an atom or group of atoms in which the number of electron s is different from the number of proton s. If the number of electrons is less than the number of protons, the particle is a positive ion, also called a cation. If the number of electrons is greater than the number of protons, the particle is a negative ion, also called an anion. When an atom of an element is short an electron, a plus sign is placed after its chemical symbol as a superscript to indicate that fact.
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ion An electrically charged atom, group of atoms, or molecule. A positive ion is an atom that has lost an electron; a negatively charged ion is one that has gained an electron. See also IONIZATION. ion an atom that carries a charge due to loss or gain of electrons. Ion
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ion definition, meaning, what is ion: an atom or small group of atoms that has an electrical charge because it has added or…. Learn more.
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dipolar ion an ion that has both positive and negative regions of charge. hydrogen ion the positively charged hydrogen atom (H +), which is the positive ion of all acids. See also hydrogen ion concentration. hydroxyl ion the negatively charged group, OH −, present to excess in alkaline solutions.
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ion (i´on) an atom or molecule that has gained or lost one or more electrons and acquired a positive charge (a cation) or negative charge (an anion).ion´ic
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The average energy required to produce an ion pair is approximately 33 (or 34) electron volts. ion-selective electrode, n a potentiometric electrode that develops a potential in the presence of one ion (or class of ions), but not in the presence of a similar concentration of other ions.
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the definition of ion
An ion is an atom or group of atoms in which the number of electrons is different from the number of protons.