Names of Binary!
Covalent Compounds
Systematic Naming of
Covalent Compounds
1.
a) Name the first element. b) If there is more than one atom of this
element, use a prefix to indicate how many.!
2.
a) Name the second element with an -ide
suffix.
b) Always use a prefix for how many atoms.!
Prefixes to 10
Element Names with -ide Endings!
!
These are the same names that you learned for the
monatomic anions. (ex. fluoride, sulfide, . . .)!
!
!
Prefix
Number !
Prefix
Number !
mono
1!
hexa
6!
di
2!
hepta
7!
tri
3!
octa
8!
tetra
4!
nona
9!
penta
5
deca
10
Naming Examples
Element Names with -ide Endings!
!
These are the same names that you learned for the
monatomic anions. (ex. fluoride, sulfide, . . .)!
!
!
Notice the use of the prefix for one.
formula
Naming Examples
name!
CO
carbon monoxide!
CO2
carbon dioxide!
Naming Examples
formula
formula
name!
name!
H 2O
dihydrogen monoxide
water!
CCl4
carbon tetrachloride!
P4O10
tetraphosphorus decoxide!
P4O10
tetraphosphorus decaoxide!
SO3
sulfur trioxide!
NI3
nitrogen triiodide!
N 2O
dinitrogen monoxide
laughing gas
Naming Summary
Formula from Name
Summary
Compound
Compound
Ionic!
1. name cation!
2. name anion
Covalent!
1. name 1st element
(prefix if necessary)!
2. name 2nd element
(-ide/always use prefix)
Ionic!
1. identify ions!
2. balance charges!
3. write neutral formula
Covalent!
use prefixes and element
names to write formula