Compounds with polyatomic ions

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged ion composed of two or more atoms covalently bonded, which can act as a single unit in chemical reactions.

Front

What is the formula for the nitrate ion?

Back

The formula for the nitrate ion is NO₃⁻.

Front

How do you determine the formula for an ionic compound?

Back

To determine the formula for an ionic compound, balance the total positive and negative charges of the ions involved.

Front

What is the charge of the hydroxide ion?

Back

The charge of the hydroxide ion is -1 (OH⁻).

Front

What is the formula for calcium nitrate?

Back

The formula for calcium nitrate is Ca(NO₃)₂.

Front

What is the formula for copper (II) hydroxide?

Back

The formula for copper (II) hydroxide is Cu(OH)₂.

Front

What is the formula for sodium nitrate?

Back

The formula for sodium nitrate is NaNO₃.

Front

What is the formula for lithium acetate?

Back

The formula for lithium acetate is LiC₂H₃O₂.

Front

What is the significance of parentheses in chemical formulas?

Back

Parentheses in chemical formulas indicate that the enclosed group of atoms is a polyatomic ion and shows how many of that ion are present in the compound.

Front

How do you write the formula for an ionic compound containing a transition metal?

Back

When writing the formula for an ionic compound containing a transition metal, include the oxidation state of the metal in Roman numerals.