Transition Metals

The formula for Copper (1) Sulfide is...

• Cu₁S₂

• CuS

• Cu₁S

• Cu₂S

The formula for Chromium (III) Selenide is...

• Cr₂Se₃

• Cr₃Se₂

• Cr₃S

• CrS

Tags

NGSS.HS-PS1-1

The formula for Nickel (II) Oxide is...

• Ni₂O₂

• NiO₂

• NiO

• Ni₂O

Answer explanation

Remember: Ni₂O₂ is not correct because your answer should be in its most reduced form: NiO.

The number 4 in Roman numerals is:

• VI

• IV

• IIII

• IIV

The charge on Tin (II) Oxide is...

• 2+

• 2-

• 0

• 1+

Answer explanation

Remember: The charge on Tin is 2+ and the charge on Oxygen is 2-, but the overall charge for Tin (II) Oxygen is 0.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

We would name FeF₂...

• Iron Fluoride

• Iron (I) Fluoride

• Iron (II) Fluorine

• Iron (II) Fluoride

We would name Zn(NO₃)₂

• Zinc (II) Nitride

• Zinc (II) Nitrate

• Zinc (II) Nitrite

• Zinc (I) Nitride

Tags

NGSS.HS-PS1-2

We would name FeSO₄...

• Iron Sulfate

• Iron Sulfite

• Iron (II) Sulfate

• Iron (II) Sulfite

Answer explanation

Don't forget: even if the charges balance, Iron is still a transition metal, which means you need to specify the charge.

The number 7 in Roman numerals is:

• VII

• IIV

• IIIV

• VI

The name (not symbol) of transition metal, #79 is:

(a)