Transition Metals in Chem Formulas

What do Roman Numerals represent in the name of a transition metal compound?

• how many atoms of the metal there are
• the oxidation number of the nonmetal
• the oxidation number of the metal
• the mass number

Where are the Roman Numerals placed in the name for a transition metal compound?

• after the anion(-)

• before the cation(+)

• between the cation(+) and anion(-)

• they are not used for transition metals

The name for Cr₂S:

• Chromium (I) sulfide
• Chromium sulfide (I)
• Chromium (II) sulfide
• Chromium  sulfide (II)

The name for CrS [Hint: Remember the oxidation number of S.]

• Chromium (I) sulfide

• Chromium (II) sulfide

• Chromium sulfide

• Chromium sulfide (II)

The name for CrN: [Hint: Remember the oxidation number of N.]

• Chromium nitride

• Chromium (I) nitride

• Chromium (III) nitride

• Chromium nitride (III)

The name for Cr₃N:

• Chromium nitride (III)
• Chromium nitride
• Chromium (III) nitride
• Chromium (I) nitride

The name for MoP: [Hint: Look up oxidation number of the P.]

• Molybdenum (III) Phosphate

• Molybdenum (I) Phosphide

• Molybdenum (I) Phosphate

• Molybdenum (III) Phosphide

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

The name for TiBr₃:

• Titanium bromide
• Titanium (III) bromide
• Titanium (I) bromide
• Titanium bromide (III)

The oxidation number for Fe in Fe₂O₃:

• +2
• +3
• +1
• -2

The oxidation number for copper in Cu₂S:

• +1
• +2
• -1
• -2