GROUPS I AND II 137
above elements other than beryllium (Be), stating in each case
the name of the element, for example Be would be Lv^2 2.v^2.
(c) Indicate in the diagram below how you would expect succes-
sive ionisation energies of magnesium to vary with the number
of electrons removed.
5 10
Number of electrons removed
(d) (i) What type of chemical bonding is generally found in
alkaline earth metal compounds?
(ii) What experiment would you carry out in order to demon-
strate the presence of this type of bonding in alkaline earth
metal compounds? Briefly indicate the results which you
would expect to obtain.
(e) How does the solubility in water of the alkaline earth metal
sulphates vary with the atomic weight of the metal?
(L,A)
- The properties of lithium resemble those of the alkaline earth
metals rather than those of the alkali metals/ Discuss this statement.
(Liverpool B.Sc.. Part I)
- Explain why the Group I elements are:
(a) univalent,
(b) largely ionic in combination,
(c) strong reducing agents,
(d) poor complexing agents.
(S,A)
