Atoms, Molecules, And Ions Worksheet - Chapter 2 Page 20
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27Chromium(III) oxide, used as a green paint
3+
2-
pigment, is composed of Cr
and O
ions.
What is the formula of chromium(III) oxide?
Strontium oxide, is composed of Sr
2+
and O
2-
ions.
What is the formula for this compound?
Potassium chromate, is a brightly colored compound
of chromium. Chromium comes from the Greek
word chroma, meaning color. The chromate anion is
CrO
2-
.
4
What is the ionic formula for this compound?
Iron(II) phosphate is found in the hydrated form in
the mineral Vivianite.
What is the formula for this compound?
20
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