Year: 2016
Topic: Classification of Elements and Periodicity in Properties
Time :
1.
In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?
(1). B < C < N < O (increasing first ionisation enthalpy)
(2). I < Br < Cl < F (increasing electron gain enthalpy)
(3). Li < Na < K < Rb (increasing metallic radius)
(4). Al
3+
< Mg
2+
< Na
+
< F
-
(increasing ionic size)