Q20Multiple correct
In which of the following options order of arrangement does not agree with the variation of property indicated against it? 3+ 2+ + –
- (i)Al < Mg < Na < F (increasing ionic size)
- (ii)B < C < N < O (increasing first ionisation enthalpy)
- (iii)I < Br < Cl < F (increasing electron gain enthalpy)
- (iv)Li < Na < K < Rb (increasing metallic radius)
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(ii) B < C < N < O (increasing first ionisation enthalpy)
(iii) I < Br < Cl < F (increasing electron gain enthalpy)