AS Inorganic Chemistry

The boiling points of the halogens increase down Group 7 because...

• Covalent bond strengths increase.

• Bond polarities increase.

• The surface areas of the molecules increase.

• Electronegativities increase.

Which substance is used to reduce titanium chloride in the extraction of titanium metal?

• Magnesium

• Manganese

• Zinc

• Vanadium

Which element has the highest second ionisation energy?

• Na

• Mg

• Ne

• Ar

Which of these species is the best reducing agent?

• Cl₂

• Cl^-

• I₂

• I^-

Describe the trend in the first ionisation energy across period 3

• It increase

• It Decrease

• It doubles

• It stays the same

Why is chlorine not used is large quantities in water treatment?

• Forms radicals

• Forms HCl in water

• Changes the colour of the water

• Produces a foul smell

Describe the atomic radii trend going down group 7.

• Increase atomic radii

• Decrease atomic radii

• Stays the same

• It doubles

How is titanium extracted from earth?

• Magnesium and chlorine must be added

• Carbon must be added

• Chlorine must be added

• Carbon monoxide must be added

Which group 2 element forms hydroxide and sulfate compounds, only one of which is soluble?

• Magnesium

• Calcium

• Strontium

• Barium

Which of the following describes the appearance of chlorine under the stated conditions?

• A

• B

• C

• D