Chemistry (Chapter 6)
Group 1A and H=
+1
Group 2A=
+2
Group 3A (AI)=
+3
Group 7A (Halogens)=
-1
Group 6A=
-2
Group 5A=
-3
Naming anions
-ide
Rules for writing ionic compounds:
1) write the metal formula by the nonmetal ion formula 2) combine the smallest whole numbers of each ion to provide an overall charge equal to zero 3) write the compound formula for the metal and nonmetal, using subscripts determines from Step 2 for each ion
Rules for naming compounds involving metals that could form multiple charges:
1. write the cation name 2. write the cation charge in Roman numerals in parenthesis 3. write the root of the anion and use the -ide suffix
Write the chemical formula for barium nitride: Ba2+ N3-
Ba3N2
Liquid
Br2
Cuprous
Cu+
Cupric
Cu+2
Write a formula for Copper(I) oxide.
Cu2O
Ferrous
Fe2+
Ferric
Fe3+
Gases
H2, N2, O2, F2, Cl2
Solid
I2
Magnesium oxide
MgO
Provide a formula for sodium oxide.
Na2O
Polyatomic arrangements
S8 and P4
Write a chemical formula for calcium sulfide. a. Ca2S b. CaS c. CaS2 d. Ca2S3
b. CaS
Br-
bromide ion
Name the compound AI2O3. a. aluminum(III) oxide b. dialuminum trioxide c. aluminum oxide d. aluminum(III) trioxide
c. aluminum oxide
Name the compound CrCl3. a. chromium chloride b. chromium (II) chloride c. chromium (III) chloride d. chromium trichloride
c. chromium (III) chloride
Ion
can be produced by adding or removing electrons from a neutral atom
Name the compound CCI4.
carbon tetrachloride
CI-
chloride ion
Type III compounds
composed of only nonmetals. prefixes are used.
Ionic compounds
compounds composed of cations and anions
Binary compounds
compounds composed of two different elements -ionic/molecular
Molecular compounds are usually
contain two nonmetals
Type II Binary Ionic Compounds
containing a metal which can form multiple cations (Fe2+, Fe3+)
Type I Binary Ionic Compounds
containing a metal which forms only one cation (Na+, Ca2+)
Write a formula for tin(IV) fluoride. a. SnF b. SnF2 c. SnF3 d. Snf4
d. Snf4
Name the compound N2O5.
dinitrogen pentoxide
Name the compound P2O5.
diphosphorus pentoxide
F-
fluoride ion
Any neutral atom that ______ an electron forms an _______.
gains, anion
Common names
historical names of compounds which are not based on systematic rules
I-
iodide ion
Name the compound FeS.
iron (II) sulfide/ferrous sulfide
Name the compound Fe2S3.
iron (III) sulfide
Any neutral atom (usually metals) that _____ an electron forms a ______.
loses, cation
Name the compound MgBr2.
magnesium bromide
Binary ionic compound
metal + nonmetal
Nonmetals form ______ ions
negative
N3-
nitride ion
Binary molecular compound
nonmetal + nonmetal
O2-
oxide ion
Metals form ____ ions
positive
Name the compound SO2.
sulfur dioxide
Chemical nonenclature
systematic naming of chemical compounds
Transitions metals can often form more than one type of cation. These metals are referred as ________.
type II metals ex) Cu can exists as either Cu+ or Cu2+
Transition metals charges:
vary
