Noble Gases and Transition Metals [305]

Which of these substances has/have a stable electronic configuration? Check all that apply.

• Helium

• Argon

• Nitrogen gas

• Krypton

Which of these is not a property of noble gases?

• Colourless

• Odourless

• Flammable

• Gas at room temperature

When compared to Group 1 metals, the transition metals are...

• harder

• softer

When compared to Group 1 metals, the transition metals have...

• higher melting points

• lower melting points

When compared to Group 1 metals, the transition metals are...

• less reactive

• more reactive

Platinum and gold are transition metals that are used in wedding rings. Which 2 properties makes them useful for this?

• These metals have low densities

• These metals do not react with water

• These metals do not react with oxygen

• These metals have low melting points

Why do the boiling points of the noble gases increase down Group 18?

• The covalent bonds become stronger

• The weak forces of attraction between particles become stronger

• The ionic bonds become stronger

• The metallic bonds become stronger

Which of these metals have ions with variable oxidation states (i.e. charges)?

• Iron

• Zinc

• Sodium

• Copper

• Magnesium