In which of the following,the molecules are arranged in the increasing order of their bond angles?

Which of the statements given below is incorrect?

Select true or false statements :
$(a)$ Promotion of electron is essential condition prior to hybridisation
$(b)$ In $VSEPR$ theory,two or three electron pairs of a multiple bond are treated as a single super pair
$(c)$ Bond length for $CO_2$ lies between double and triple bonds
$(d)$ $Ne_2$ does not exist

The number of bonds between sulphur and oxygen atoms in $S_{2}O_{8}^{2-}$ and the number of bonds between sulphur and sulphur atoms in rhombic sulphur,respectively,are

In the reaction $SnCl_2 + 2Cl^{-} \to SnCl_4$,the Lewis acid is:

Which of the following compounds contains both polar and non-polar bonds?