Q4. Arange the following compounds in the decreasing order of their thermal stability? B,F BCl B,Br4 B,I4 I III) IV) a) I> II >III > IV b) IV> III > II > II c) II> II> IV>I d) I>IV > II > III
option A
First factor we see while thermal stability is charge and then size larger the size of anion more the polarization ,so more distortion ,lesser the stability