A Levels Chemistry

The table gives the radii, in pm, of some ions. [1 pm = 10-12 m]
%3D
ion
radii
Na*
102
Mg2*
72
Cs*
167
181
02-
140
Caesium chloride, CsCl, has a different lattice structure from both sodium chloride, NaCl, and
magnesium oxide, MgO.
CsCl lattice
NaCl and Mgo lattice
Which factor appears to determine the type of lattice for these three compounds?
A the charge on the cation
B the ratio of the ionic charges
c the ratio of the ionic radii
D
the sum of the ionic charges


The Periodic Table: Chemical Periodicity | 2010 - O/N - 9701/12 | Q3