chapter 4 Flashcards
covalent bond
<0.4
polar covalent bond
0.4-2.0
ionic bond
> 2.0
naming binary ionic compounds (type I)
name the cation first and the anion second, the cation takes its name from the parent element, the anion takes the root of its element and adds -ide
naming binary ionic compounds (type II)
charge of metal ion must be indicated with roman numerals
to determine the charge of a transition metal in an ionic compound
take the opposite charge of the anion. if there is more than one of that ion, multiply the charge by the number of them and then take the opposite charge
mercury polyatomic ion
Hg2^2+
Ammonium
NH4^+
nitrite
NO2^-
nitrate
NO3^-
sulfite
SO3^2-
sulfate
SO4^2-
hydrogen sulfate; bisulfate
HSO4^-
hydroxide
OH^-
cyanide
CN^-
phosphate
PO4^3-
hydrogen phosphate
HPO4^2-
dihydrogen phosphate
H2PO4^-
carbonate
CO3^2-
hydrogen carbonate; bicarbonate
HCO3^-
hypochlorite
ClO^- or OCl^-
chlorite
ClO2^-
chlorate
ClO3^-
perchlorate
ClO4^-
acetate
C2H3O2^-
permanganate
MnO4^-
dichromate
Cr2O7^2-
chromate
CrO4^2-
O2^2-
peroxide
C2O4^2-
oxalate
S2O3^2-
thiosulfate
naming binary covalent compounds (type III)
name first element in formula with full element name, name second element like an anion, add prefixes to elements with more than one atom, never use mono for naming first element
water
H2O
ammonia
NH3
phosphine
PH3
methane
CH4
alkane
single bonds between carbon
alkines
at least one double bond between carbons
alkines
at least one triple bond between carbons
1 carbon
meth-
2 carbon
eth-
3 carbon
prop-
4 carbon
but-
5 carbon
pent-
6 carbon
hex-
7 carbon
hept-
8 carbon
oct-
naming hydrates
ionic compound followed “_____hydrate” with prefix indicating amount
acids
recognized by the hydrogen that appears first in the formula; molecule with one or more H+ ions attached to an anion
if anion doesn’t contain oxgyen
named with prefix hydro- and suffix -ics
oxyacid
anion containing oxygen
naming oxyacids
add suffix -ous to the root name if the anion name ends in -ite