Choose the correct order.
(A) Si < P < Cl < S \((2^{nd}\) ionization energy
(B) F < O < N < C \(2^{nd}\) ionization energy)
(C) F > Cl > Br >I (Electronegativity)
(D) \(Na_{2}O\) < MgO < ZnO < \(P_{4}O_{10}\) (Acidic Property)

In C,N,O and F the electronegativity

Select correct order (A) \(F^{-} > Cl^{-}\) (correct order of ionisation energy) (B) O>Cl (correct order of electron affinity) (C) O > F > N(correct order of second ionisation energy) (D) \(H^{-} < Cl^{-}\) (correct order of ionic size)

Correct order of radius of elements is: C, O, F, Cl, Br

The correct order of A-O-A bond angle of (A=H,F or Cl)

The order of reactivity of halogens is (A) F>Cl>Br>I (B) F (C) F Br (D) F I