Chem. Ch. 9

What is the oxidation number of the alkaline-earth metals?

• +1

• +2

• -1

• -2

Which one of the following is not considered a free element?

• hydrogen

• a halogen

• a noble gas

• oxygen

What is the oxidation number of barium in Ba(ClO3)2?

• -2

• -1

• +1

• +2

What is the oxidation number of Hg in Hg3(PO4)2?

• +2

• +3

• -2

• -3

What is the chemical formula for potassium sulfide?

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What is the correct name for the compound BaCl2?

• barium chlorate

• barium chlorine

• barium chlorite

• barium chloride

What is the correct name for the compound Pb(NO3)2?

• lead(I) nitrate

• lead(II) nitrate

• lead(I) nitrite

• lead(II) nitrite

An anion composed of oxygen and one other element is called a(n) __________.

• polyatomic ion

• polyatomic anion

• oxyanion

• binary anion

What is the correct name for the polyatomic ion NO3 − ?

• ammonium

• cyanide

• acetate

• nitrate

What is the chemical formula for carbon disulfide?

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