Q10.
The first five successive ionization energies of an element, X, are shown in the table
below.
Ionization
energy
Value
/kJ mol-1
first
☐C X³+
D X4+
590
second
1100
third
4900
fourth
6500
Which ion is X most likely to form when it reacts with chlorine?
□ A X+
OBX²+
fifth
$100
(Total for question = 1 mark)
