21st November 2019


What is an anion and cation?

Anion vs. Cation. Ions result from atoms or molecules that have gained or lost one or more valence electrons, giving them a positive or negative charge. Those with a negative charge are called anions and those with a positive charge are called cations.

What is the main difference between monatomic and polyatomic ions?

A monatomic ion consists of a single atom that is ionized. For example Na+, Cl-, Fe+3, O-2. A polyatomic ion consists of several atoms bonded to each other, but acting as if it were one ion. ClO3-, NH3+, SO4-2, CO3-2.
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