Transition Metal Properties

What are the special chemical properties of transition metals?

• They have high melting points and densities.

• They are poor conductors of electricity.

• They do not form colored compounds.

• They have low boiling points.

Which elements show variable oxidation states?

• Transition metals

• Noble gases

• Alkali metals

• Alkaline earth metals

What is the oxidation state of Iron (Fe) according to the table?

• The oxidation state of Iron (Fe) can vary depending on the compound it is in, but common oxidation states are +2 and +3.

• Iron (Fe) always has an oxidation state of +1.

• Iron (Fe) has an oxidation state of 0 in all compounds.

• Iron (Fe) only has an oxidation state of -2.

What is the solution colour for Cr³⁺?

• Green

• Yellow

• Orange

• Purple

What metal species produces a yellow solution?

• Cr³⁺

• CrO₄ ^2-

• Cr₂O₇ ^2-

• MnO₄ ^-

Fill in the blank: The solution colour for Cr₂O₇ ^2- is ________.

• Orange.

• Blue.

• Green.

• Red.

What is the solution colour for MnO₄ ^-?

• Green

• Yellow

• Orange

• Purple

Fill in the blank: The solution colour for Co²⁺ is ________.

• Pink.

• Blue.

• Green.

• Yellow.

What metal species produces a pale green solution?

• Cr³⁺

• Fe²⁺

• Fe³⁺

• MnO₄ ^-

Fill in the blank: The solution color for Fe³⁺ is ________.

• Brown to yellow.

• Blue.

• Green.

• Red.