Name ____________ Period ________
Polyatomic Ion Worksheet
Place the charges on each ion – Write the Formula - Name the Compound
Remember – The cation always goes first.
Example: NH4+1
&
I-1
Formula: NH4I
Name: Ammonium Iodide
1.
NH4
&
O
Formula: ______________ Name: _____________________
2.
Ca
&
CO3
Formula: ______________ Name: _____________________
3.
HCO3 &
Na
Formula: ______________ Name: _____________________
4.
NO3
&
Mg
Formula: ______________ Name: _____________________
5.
K
&
SO4
Formula: ______________ Name: _____________________
6.
Li
&
PO4
Formula: ______________ Name: _____________________
Finding the Formula from the Name
Example:
Lithium Chloride
Ions: Li+1 & Cl-1
Formula: LiCl
1.
Sodium Oxide
Ions: ______________________
Formula: _______________
2.
Potassium Bromide
Ions: ______________________
Formula: _______________
3.
Calcium Nitride
Ions: ______________________
Formula: _______________
4.
Beryllium Sulfide
Ions: ______________________
Formula: _______________
5.
Magnesium Iodide
Ions: ______________________
Formula: _______________
6.
Aluminum Oxide
Ions: ______________________
Formula: _______________
7.
Ammonium Bromide Ions: ______________________
Formula: _______________
8.
Calcium Bicarbonate Ions: ______________________
Formula: _______________
9.
Potassium Phosphate Ions: ______________________
Formula: _______________
10.
Aluminum Sulfate
Formula: _______________
Ions: ______________________