Ions

Question 1

Ions

Complex ion

Answer 1

A central metal ion (like Fe) is bound to ligands by coordinate covalent bonds.

Question 2

Ions

Chelate

Answer 2

Within a complex ion, when the same single ligand has multiple bonds to the central metal cation.

Question 3

Ions

Common ion effect

Answer 3

Application of Le Chatelier’s principle to solubility reactions. When you add ions, it shifts the equilibrium and therefore decreases solubility.

Question 4

Ion nomenclature

Metal cations

Answer 4

For naming metal ions with multiple possible charges, use the charge in parentheses or use the suffixes -ous (lesser charge) or -ic (greater charge). For example: Fe2+ = Iron(II) or ferrous and Fe3+ = Iron(III) or ferric.

Question 5

Ion nomenclature

Monatomic ions

Answer 5

Use suffix -ide. For example: O2- = oxide.

Question 6

Ion nomenclature

Oxyanions

Answer 6

Anions containing oxygen. Use suffix -ate (higher oxygen version) or -ite (lower oxygen version). For example: NO3- = nitrate and NO2- = nitrite.

Question 7

Ion nomenclature

Hydrogen plus oxyanions

Answer 7

Add hydrogen before the name. For example HCO3- = hydrogen carbonate.