Chapter 12 Multiple Choice Questions

. The ionization energies of the Group 2 elements decrease and the radii decrease down the group. Therefore:

The metals are less easily oxidized down the group.

The metals are more easily oxidized down the group.

Redox properties do not change systematically down the group.

. Which of the following statements is correct?

Be is resistant to corrosion and can be used in specialized alloys and as a moderator for nuclear reactions.

Mg is of great biological importance since it is the acceptor component in the hemoglobin molecule.

Ca is used in pyrotechnics and in classes for color TV tubes.

. Which Group 2 element does not form saline hydride?

Ca

Sr

Be

. Select the incorrect statement:

Be forms covalent halides.

All Group 2 halides, except the fluorides of Mg, Ca, Sr, and Ra, are soluble in water.

All fluorides of Group 2 elements are insoluble in water.

. Are all Group 2 peroxides strong oxidizing agents?

Yes.

No.

All are, except BaO₂.

. What is the pH of a saturated solution of Ca(OH)₂? The solubility of Ca(OH)₂ is 2.11×10^–3 M.

11.02

11.32

11.63

. The Group 2 carbides react with water to produce:

CO gas

H₂ gas

a hydrocarbon gas

. Are all Group 2 carbonates soluble in water?

All are sparingly soluble, except BeCO₃.

All are sparingly soluble in water.

All are sparingly soluble, except CaCO₃.

. Do all Group 2 elements form stable complexes with simple ligands?

Only Ca does.

Only Be does.

None of them does.

. Which of the listed groups of compounds are known as Grignard reagents?

alkyl- and arylberyllium compounds

alkyl- and arylmagnesium halides

alkyl- and arylcalcium compounds

Quiz Content