Name:______________________________
Formula Assignment #2
Compound Names and Formulas
Elements with TWO OR MORE
Combining Capacities
A. Write the correct formula for the following
compounds, all of which have been named using the modern Roman Numeral Method. The combinign capacity is given after the
first element (metallic) in Roman Numerals.
1. copper
(II) oxide ___________________ 11. manganese (III) oxide _______________
2. mercury (I) oxide __________________ 12. vanadium (II) bromide _______________
3. gold (III) chloride __________________ 13. niobium(V)
oxide _________________
4. thallium (III) bromide _______________ 14. titanium
(III) oxide _________________
5. bismuth (V) oxide _________________ 15. titanium
(III) nitride _________________
6. terbium (III) oxide _________________ 16. iron (II) oxide
_____________________
7. uranium (VI) oxide _________________ 17. cobalt (II)
phosphide _______________
8. protactinium (III) bromide _____________ 18. tin (II) oxide ______________________
9. cerium (III) oxide ____________________ 19. thulium (II)
bromide _________________
10. arsenic (V) sulphide ________________ 20. copper (II) bromide _________________
B. Determine the combining capacity of the first
element by using the reverse cross rule.
Name the compound using the Roman Numeral Method.
1. SnCl4 _______________________ 9. PdF4 _______________________
2. BiBr5 _______________________ 10. Os2O3 _______________________
3. PoO2 _______________________ 11. MoBr2 _______________________
4. PbI2 _______________________ 12.
VCl5 _______________________
5. HgO
_______________________ 13. Mn2O3 _______________________
6. HgCl _______________________ 14.
CoO _______________________
7. Au2O3 _______________________ 15. Np2O3
_______________________
8. FeCl2 _______________________ 16. V2O5
_______________________