A. Compound made up of only two elements. One of the element is a metal which only has
one possible valency (ie: not Cu, Cr, Fe, Hg, Mn, Mo, Pb, Sn, Ti or V)
RULE : Write down the name of the metal first, followed by the name of the non metal with the
ending “ide”
Name these:
1. CaO
.......................................
2. Na2S
.......................................
3. AlCl3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. BaS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. AgCl
.......................................
6. SiC
.......................................
7. BN
.......................................
8. SrI2
.......................................
9. KBr
.......................................
10. MgI2
.......................................
B. Compound made up of only two elements. One of the element is a metal which can have
more than one possible valency (ie: Cu, Cr, Fe, Hg, Mn, Mo, Pb, Sn, Ti or V).
RULE : Write down the name of the metal first with its valency in brackets, followed by the name
of the non-metal with the ending “ide”.
Name these:
1. CuCl
.......................................
2. CuCl2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. PbBr2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. PbBr4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Fe2O3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. FeO
.......................................
7. CrO
.......................................
8. Cr2O3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. CrO3
.......................................
10. CoCl2
.......................................
11. CoCl3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. PbI2
.......................................
C. Compound made up of more than two elements (ie: it contains a polyatomic ion).
Contains a metal which can only have one possible valency (ie: not Cu, Cr, Fe, Hg, Mn,
Mo, Pb, Sn, Ti or V) or the ammonium ion.
RULE : Write down the name of the metal first, followed by the name of the polyatomic ion. If the
polyatomic ion is ammonium, it is written first.
Name these:
1. Ag2CO3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. ZnSO4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. NH4NO3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Al(OH)3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Na3PO4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. LiOH
.......................................
7. Ca(NO3)2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. MgSO4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. KNO2
.......................................
10. Ca(CH3COO)2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D. Compound made up of more than two elements (ie: it contains a polyatomic ion). One of
the elements is a metal which can have more than one possible valency (ie: Cu, Cr, Fe,
Hg, Mn, Mo, Pb, Sn, Ti or V)
RULE : Write down the name of the metal first, with its valency in brackets, followed by the name
of the polyatomic ion.
Name these:
1. CuSO4
.......................................
2. Cu2SO4
.......................................
3. Pb(NO3)2
.......................................
4. Pb(NO3)4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. FeCO3
.......................................
6. Fe2(CO3)2
.......................................
7. Cu(OH)2
.......................................
8. Cr(PO4)2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Cr3(PO4)4
.......................................
10. Fe(OH)3
.......................................
E. Compound contains only 2 elements. Both elements are non metals (it is a covalent
compound).
RULE: Write down the name of the element which is closest to the left of the periodic table first,
then write the name of the other element with the ending “ide”. Use the prefixes “mono”, “di”, “tri”
etc.. to indicate the number of each element. Note : the prefix “mono” is usually left off the
beginning of a name.
Name these:
1. N2O4
.......................................
2. NO2
.......................................
3. PCl3
.......................................
4. PCl5
.......................................
5. P2O5
.......................................
6. SO2
.......................................
7. CO2
.......................................
8. CO
.......................................
9. SCl2
.......................................
10. CBr4
.......................................