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Which of the following is an anion? A. O2– B. Mg2+ C. Al3+ D. H
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Which of the following is an anion?

A. O2–
B. Mg2+
C. Al3+
D. H

User COMisHARD
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2 Answers

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An anion is O2- that is option A.
User Zds
by
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An anion is an ion that has gained electrons and because of this it has an overall electrical charge that is negative due to the excess of electrons, which is greater than the atomic number or number of protons for the atom.

A. O2- is the anion.
User Gabriel Wamunyu
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