NEET Solved Paper 2016 Question 6

Question: In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

Options:

A) $ A{l^{3+}}<M{g^{2+}}<N{a^{+}}<{F^{-}} $ (increasing ionic size)

B) B < C < N < O (increasing first ionisation enthalpy)

C) $ I<Br<Cl<F $ (increasing electron gain enthalpy)

D) $ Li<Na<K<Rb $ (increasing metallic radius)

Show Answer

Answer:

Correct Answer: B

Solution:

(b, c) B < C < N < O (given I.P. order) B < C < O < N (correct) I < Br < Cl < F (given $ \Delta H _{eg} $ order) I < Br < F < Cl (Correct)