Identify each of the following compounds as binary or ternary.
a. nickel (III) oxide
b. copper(II) iodide
c. tin(IV) nitride
d. chromium (II) bromide
e. iron (III) phosphide
f. lithium hydroxide
g. Potassium sulfate
h. Ammonium phosphide
i. Barium nitrate
j. cobalt (II) phosphate