Identify the incorrect statements among the following?

(i) $$\mathrm{SF}_6$$ does not react with water.

(ii) $$\mathrm{SF}_6$$ is $$s p^3 d$$ hybridised.

(iii) $$\mathrm{S}_2 \mathrm{O}_3^{2-}$$ is a linear ion.

(iv) There is no $$\pi$$-bonding in $$\mathrm{SO}_4^{2-}$$ ion.

Given that ionisation potential and electron gain enthalpy of chlorine are 13eV and 4 eV respectively. The electronegativity of chlorine on Mulliken scale, approximately equals to

Which of the following will have maximum dipole moment?

In which of the following molecules/ions, the central atom is sp$$^2$$ hybridised?

BF$$_3$$, NO$$_2^-$$, NH$$_2^-$$ and H$$_2$$O