Does it start with hydro
Combine H+ and the
halogen together so
the overall charge
equals zero
Does it have an
Yes
No
Does the name end with
acid
Flow Chart for Writing Formulas for Simple Inorganic Compounds
No Yes
ous ic
Combine H+ with
polyatomic ion that
has “ite” ending so
charge equals zero
Combine H+ with polyatomic
ion that has “ate” ending so
charge equals zero
Does it end in “ide”
No Yes
Combine first part
of name with
element from
periodic table with
polyatomic ion
from chart so that
the overall charge
equals zero
Is it Ammonium NH
4
+
Hydroxide OH –
Or Cyanide CN-
Yes No
Combine polyatomic ion
mentioned in last step
with other ion so charges
equal zero
Does it have a roman numeral
No Yes
Write symbols and use oxidation states
from periodic table so the overall
charge equals zero
Use the roman numeral to give the
charge of the first symbol and combine
it to the second symbol so the overall
charge equals zero
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