24 THE PERIODIC TABLE
(a) What deduction can you make from this graph?
(b) Continue the graph to element 60(Nd), and mark on it the
approximate positions of the elements
(i) Ag (element 47),
(ii) I (element 53),
(iii) Ba (element 56)
(c) Explain briefly
(i) the decrease in atomic radius from Li to F,
(ii) the increase in atomic radius from F to Br,
(iii) the very large atomic radii of the alkali metals, Li to K.
(JMB, A)- Give the electronic configurations of elements with atomic
numbers, 7,11,17,20,26,30 and 36.
In each case give the oxidation state (or states) you expect each
element to exhibit.
- Explain the terms,
(a) typical element
(b) transition element,
(c) rare earth element,
(d) group,
(e) period,
(f) diagonal relationship,
as applied to the periodic table of elements.
In each case give examples to illustrate your answer.