110
Formulas and Nomenclature
BINARY COMPOUNDS COMPOSED OF TWO NONMETALS
Allowing for a bit of quibbling one way or the other, there are only 20 nonmetallic elements. Of these 20 elements, six are so unreactive that until recently they
were thought never to combine with other elements. If, for practical considerations, we eliminate these six elements and hydrogen (which we've already
dealt with in various forms above), this leaves just 13 nonmetallic elements (B,
C, N, O, F, Si, P, S, Cl, Se, Br, Te, I) that can combine with each other. These
nonmetallic binary compounds are designated by the names of the two elements
followed by the ending -ide. Before the name of the second element there is a
prefix to indicate how many atoms of it are in the molecule. Unfortunately, this
is not usually done for the first element. The following are examples of some
common compounds of this type:
CO
CO 2
C1 2 0
C10 2
C1 2 0 7
carbon monoxide
carbon dioxide
chlorine monoxide
chlorine dioxide
chlorine heptoxide
S0 3
CC1 4
PF 5
SF 6
N 2 0 4
sulfur trioxide
carbon tetrachloride
phosphorus pentafluoride
sulfur hexafluoride
nitrogen tetroxide
PROBLEMS A
Name the following compounds (proper spelling is required).
1. Ca(OH) 2
12. FeC 2 O 4
2- A gj P0 4
13. Hg 2 Cl 2
3. AgSCN
14. MnCOj
4. MgC«H 4 O 4
15. Mn(OH).,
5. (NH 4 ) 2 SO 4
16. Ni(ClO) 2
6. ZnS
17. CrAsO 4
7. Cd(CN) 2
18. SnBr 4
8. Ba(IO 3 ) 2
19. CrF 2
9. CuSO,
20. Pb(MnO.i) 2
10. Cul
21. Na 4 SiO 4
11. Fe(NO i ) 1
22. Bi,O 5
Without consulting a text, give the formulas for the following compounds.
34. aluminum bromate
36. bismuth(III) oxide
35. mercurous phosphate
37. strontium bicarbonate
23. AKCIOJ,
24. Hg(C 2 H 3 0 2 ) 2
25. CsCIO,
26. Sr(IO) 2
27. Rb^AsO,
28. Be,N 2
29. Ca(HCO,) 2
30. SMNO,),
31. PCI,
32. Bi(OCN) 3
33. A1 2 (S 2 O,) 3
Formulas and Nomenclature
BINARY COMPOUNDS COMPOSED OF TWO NONMETALS
Allowing for a bit of quibbling one way or the other, there are only 20 nonmetallic elements. Of these 20 elements, six are so unreactive that until recently they
were thought never to combine with other elements. If, for practical considerations, we eliminate these six elements and hydrogen (which we've already
dealt with in various forms above), this leaves just 13 nonmetallic elements (B,
C, N, O, F, Si, P, S, Cl, Se, Br, Te, I) that can combine with each other. These
nonmetallic binary compounds are designated by the names of the two elements
followed by the ending -ide. Before the name of the second element there is a
prefix to indicate how many atoms of it are in the molecule. Unfortunately, this
is not usually done for the first element. The following are examples of some
common compounds of this type:
CO
CO 2
C1 2 0
C10 2
C1 2 0 7
carbon monoxide
carbon dioxide
chlorine monoxide
chlorine dioxide
chlorine heptoxide
S0 3
CC1 4
PF 5
SF 6
N 2 0 4
sulfur trioxide
carbon tetrachloride
phosphorus pentafluoride
sulfur hexafluoride
nitrogen tetroxide
PROBLEMS A
Name the following compounds (proper spelling is required).
1. Ca(OH) 2
12. FeC 2 O 4
2- A gj P0 4
13. Hg 2 Cl 2
3. AgSCN
14. MnCOj
4. MgC«H 4 O 4
15. Mn(OH).,
5. (NH 4 ) 2 SO 4
16. Ni(ClO) 2
6. ZnS
17. CrAsO 4
7. Cd(CN) 2
18. SnBr 4
8. Ba(IO 3 ) 2
19. CrF 2
9. CuSO,
20. Pb(MnO.i) 2
10. Cul
21. Na 4 SiO 4
11. Fe(NO i ) 1
22. Bi,O 5
Without consulting a text, give the formulas for the following compounds.
34. aluminum bromate
36. bismuth(III) oxide
35. mercurous phosphate
37. strontium bicarbonate
23. AKCIOJ,
24. Hg(C 2 H 3 0 2 ) 2
25. CsCIO,
26. Sr(IO) 2
27. Rb^AsO,
28. Be,N 2
29. Ca(HCO,) 2
30. SMNO,),
31. PCI,
32. Bi(OCN) 3
33. A1 2 (S 2 O,) 3