Select your answer by clicking on the appropriate button (buttons are labeled with a question mark, "?").
Rules for Naming Binary Covalent Compounds
A binary covalent compound is composed of two different elements (usually nonmetals). For example, a molecule of chlorine trifluoride, ClF3 contains 1 atom of chlorine and 3 atoms of fluorine.
Rule 1. The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. Exception: when the compound contains oxygen and a halogen, the name of the halogen is the first word in the name.
Rule 2. If both elements are in the same group, the element with the higher period number is written first in the name.
Rule 3. The second element in the name is named as if it were an anion, i.e., by adding the suffix -ide to the root of the element name (e.g., fluorine = F, "fluoride" = F-; sulfur = S, "sulfide" = S2-).
Rule 4.Greek prefixes are used to indicate the number of atoms of each element in the chemical formula for the compound. Exception: if the compound contains one atom of the element that is written first in the name, the prefix "mono-" is not used.
Note: when the addition of the Greek prefix places two vowels adjacent to one another, the "a" (or the "o") at the end of the Greek prefix is usually dropped; for example, "nonaoxide" would be written as "nonoxide", and "monooxide" would be written as "monoxide". The "i" at the end of the prefixes "di-" and "tri-" are never dropped.
What is the correct name for the compound, AsF5?
argon fluoride
pentaarsenic monofluoride
monoarsenic pentafluoride
arsenic pentafluoride
pentafluorine monoarsenide
What is the correct name for the compound, B2Cl4?
boron tetrachloride
tetraboron dichloride
diboron tetrachloride
monobromine dichloride
tetrachlorine diboronide
What is the correct name for the compound, AsF3?
trifluorine monoarsenide
monoarsenic fluoride
argon trifluoride
monoarsenic trifluoride
arsenic trifluoride
What is the correct name for the compound, BrF3?
bromine trifluoride
monoboron trifluoride
tribromine monofluoride
monobromine fluoride
trifluorine monobromide
What is the correct name for the compound, ClF?
fluorine monochloride
carbon fluoride
fluorine chloride
monochlorine monofluoride
chlorine monofluoride
What is the correct name for the compound, ClO2?
dichlorine monoxide
calcium oxide
monochlorine dioxide
chlorine dioxide
dioxygen monochloride
What is the correct name for the compound, Cl2O7?
chlorine oxide
heptaoxygen dichloride
heptacalcium dioxide
dioxygen heptachloride
dichlorine heptaoxide
What is the correct name for the compound, PF5?
phosphorus pentafluoride
monophosphorus pentafluoride
potassium fluoride
pentafluorine monophosphide
phosphorus tetrafluoride
What is the correct name for the compound, ICl?
iodine chloride
monoiodine monochloride
iodine monochloride
chlorine monoiodide
chlorine iodide
What is the correct name for the compound, IF7?
monoiodine heptafluoride
iodine heptafluoride
heptaiodine monofluoride
heptafluorine monoiodide
iodine fluoride
What is the correct name for the compound, NF3?
sodium trifluoride
mononitrogen trifluoride
trifluorine mononitride
nitrogen trifluoride
nitrogen fluoride
What is the correct name for the compound, NO2?
nitrogen oxide
dioxygen mononitride
dinitrogen monoxide
sodium dioxide
nitrogen dioxide
What is the correct name for the compound, CF4?
carbon fluoride
calcium tetrafluoride
carbon tetrafluoride
tetrafluorine carbide
monocarbon tetrafluoride
What is the correct name for the compound, N2O?
dinitrogen monoxide
nitrogen dioxide
oxygen dinitride
disodium oxide
mononitrogen dioxide
What is the correct name for the compound, N2O4?
nitrogen oxide
dinitrogen tetraoxide
tetraoxygen dinitride
disodium oxide
tetranitrogen dioxide
What is the correct name for the compound, P4O6?
hexaoxygen phosphide
tetrapotassium hexaoxide
phosphorus oxide
tetraphosphorus hexaoxide
oxygen phosphide
What is the correct name for the compound, P4S3?
tetrapotassium trisodium
triphosphorus tetrasulfide
phosphorus sulfur
trisulfur tetraphosphide
tetraphosphorus trisulfide
What is the correct name for the compound, SeF6?
selenium hexafluoride
sulfur hexafluoride
hexafluorine selenide
monoselenium hexafluoride
selenium fluoride
What is the correct name for the compound, PCl3?
potassium trichloride
phosphorus trichloride
monophosphorus chloride
trichlorine monophosphide
phosphorus trichlorine
What is the correct name for the compound, SF2?
sodium difluoride
monosulfur fluoride
difluorine sulfide
disulfur monofluoride
sulfur difluoride
What is the correct name for the compound, SF6?
monosulfur fluoride
hexafluorine monosulfide
hexasulfur monofluoride
sulfur hexafluoride
sodium hexafluoride
What is the correct name for the compound, SO3?
monosulfur trioxide
trioxygen monosulfide
monosodium trioxide
sulfur oxide
sulfur trioxide
What is the correct name for the compound, S2F10?
diselenium decafluoride
decafluorine disulfide
disulfur decafluoride
disulfur fluoride
disulfur decafluorine
What is the correct name for the compound, XeF4?
xenon tetrafluoride
monoxenon tetrafluoride
tetrafluorine monoxenon
tetraxenon monofluoride
xenon fluoride
What is the correct name for the compound, CS2?
monocarbon disulfide
carbon disulfide
disulfur monocarbide
carbon sulfide
carbon diselenide
What is the correct molecular formula for the compound, antimony trichloride?
AmCl3
SbCl
Sb3Cl
SbCl3
SbCl2
What is the correct molecular formula for the compound, boron trifluoride?
BF2
BF
BF3
BrF3
B3F
What is the correct molecular formula for the compound, dinitrogen dichloride?
NCl
Na2Cl2
N2Cl
N2Cl3
N2Cl2
What is the correct molecular formula for the compound, chlorine dioxide?
Cl2O
CaO2
Cl2O2
ClO2
ClO3
What is the correct molecular formula for the compound, chlorine monofluoride?
Cl2F
ClF
CaF
Cl2F2
ClF2
What is the correct molecular formula for the compound, dichlorine monoxide?
ClO
Ca2O
Cl2O
ClO2
Cl4O2
What is the correct molecular formula for the compound, disulfur decafluoride?
S2F10
SF5
Na2F10
S8F10
S10F2
What is the correct molecular formula for the compound, tetraphosphorus trisulfide?
PS
K4S3
P3S4
P4S3
P4S2
What is the correct molecular formula for the compound, tetraphosphorus hexaoxide?
P6O4
PO
P4O6
P4O7
K4O6
What is the correct molecular formula for the compound, nitrogen trichloride?
NCl3
N3Cl
NCl
NaCl3
NCl4
What is the correct molecular formula for the compound, nitrogen monoxide?
N2O
NaO
Na2O
N2O2
NO
What is the correct molecular formula for the compound, carbon tetrabromide?
CBr4
CBr
C4Br
CB4
CBr8
What is the correct molecular formula for the compound, dinitrogen trioxide?
NO3
Na2O3
N2O3
N4O3
N2O
What is the correct molecular formula for the compound, phosphorus pentachloride?
P5Cl
KCl5
PCl6
PCl
PCl5
What is the correct molecular formula for the compound, arsenic pentafluoride?
ArF5
AsF5
As5F
AtF5
AsF4
What is the correct molecular formula for the compound, tetraphosphorus decaoxide?
K4O10
P10O4
P4O10
P2O5
PO
What is the correct molecular formula for the compound, tetraphosphorus decasulfide?
P4S10
P2S5
PS
P10S4
K4S10
What is the correct molecular formula for the compound, selenium tetrafluoride?
Se4F
SF4
SeF8
SeF4
SeF
What is the correct molecular formula for the compound, silicon tetrachloride?
SCl4
SeCl4
SiCl8
SiCl
SiCl4
What is the correct molecular formula for the compound, sulfur tetrafluoride?
SF
SF4
SiF4
SF5
SF3
What is the correct molecular formula for the compound, sulfur dioxide?
SeO2
SO
SO2
S2O
SO4
What is the correct molecular formula for the compound, disulfur dichloride?
S2Cl2
Si2Cl2
SCl
S2Cl4
S16Cl4
What is the correct molecular formula for the compound, xenon difluoride?
XeF4
XeF
Xe2F
XeF3
None of these is correct.
What is the correct molecular formula for the compound, xenon trioxide?
XeO6
Xe3O
XeO
XeO3
XeO4
What is the correct molecular formula for the compound, dinitrogen pentoxide?