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Question

In which of the  following option the order of arrangement does not agree with the variation of property indicated against it

a) Li<Na<K<Rb(increasing  metallic radius)

b) B<C<N<O(increasing 1st ionisation enthalpy)

c)I<Br<Cl<F(increasing electron gain enthalpy)

d) Al3+<Mg2+<Na+<F-(increasing ionic size)


Solution

(b, c) For increasing first ionization enthalpy, the order should be:
B < C < O < N
For increasing electron gain enthalpy, the order should be:
I < Br < F < Cl

Chemistry

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