if a metal ion has more
than one possible
charge it is indicated
by a roman numeral in
parentheses following
the name
Fe(2+) = iron (II) ion
Fe(3+) = iron (III) ion
U(6+) = uranium (VI) ion
naming
monoatomic
non-metal
ions
monoatomic:
species made
up of ONE
atom
Ne He Li+ Cl-
diatomic:
species
containing TWO
atoms
polyatomic:
species containing
>1 atom
take off the original
ending and replace with
'ide'
chlorine = chloride
fluorine = fluoride
constructing
formula of ionic
compound given
name of compound
write formula of
positive ion first and
negative ion next
criss cross
the #s in front
of the ion
charges
tidy it up
if both subscripts can
be divided by 2 or 3, do
so
omit the
superscript
charges
omit subscripts equal to 1
constructing the
name of an ionic
compound given the
formula
how many possible
charges does the
first ion have?
one
write names of
ions one after
another
ZnCl2 = znic chloride
more than one
un criss cross subscripts and use as charges.
if the charge on the
negative ion is
double/triple the charge
calculated by un-criss
crossing, double/triple the
charges on both positive
and negative ions
naming hydrates
add prefix with
'hydrate' after
compound
naming
compounds using
prefix-naming
system
generally reserved for binary compounds
in which there are two different
nonmetals involved
each
compound is
made up of
two terms,
each with a
suitable prefix
first word is name
of first element with
a prefix
second word is name of
second element with an
'ide' ending and a prefix