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ChemistryChemistry
14 December, 12:24

Which of the following is an anion?

A. O2-

B. Mg2+

C. Al3+

D. H

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Answers (2)
  1. 14 December, 14:00
    0
    An anion is O2 - that is option A.
  2. 14 December, 15:13
    0
    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.
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