Polyatomic Ions

Question 1

C2H3O2-

Answer 1

Acetate ion

Question 2

ClO3-

Answer 2

Chlorate ion

Question 3

What is the difference between polyatomic ions ending in -ite as opposed to -ate?

Answer 3

Polyatomic ions ending in -ite have one less oxygen atom than polyatomic atoms ending in -ate

Question 4

When are the prefixes hypo- and per- used?

Answer 4

Hypo- is used when your ion has 1 less oxygen atom than your ion ending in -ite, and per- is used when your ion has 1 more oxygen atom than your ion ending in -ate

Question 5

CN-

Answer 5

Cyanide ion

Question 6

NO3-

Answer 6

Nitrate ion

Question 7

OH-

Answer 7

Hydroxide ion

Question 8

CO₃^2-

Answer 8

Carbonate ion

Question 9

SO₄^2-

Answer 9

Sulfate ion

Question 10

PO₄^3-

Answer 10

Phosphate ion

Question 11

NH4+

Answer 11

Ammonium ion