BF₃

CO₃²⁻

N atom in C₅H₅N

H₃O⁺

It deals with polarization.

Larger the size of cation, lager it polarizes the anion.

Smaller the size of cation, larger it polarizes the anion.

Larger the size of anion, larger it gets polarized by cation.

F₂ > Cl₂ > Br₂ > I₂

Cl₂ > F₂ > Br₂ > I₂

F₂ > I₂ > Cl₂ > Br₂

Cl₂ > Br₂ > F₂ > I₂

S is sp³ hybridised

Lonepair−lonepair repulsion is greater than bondpair−bondpair repulsion

The bonds are more or less purely p type

The bondpair−bondpair repulsion is high enough due to larger size of S

Its bond order is 2

Both bonds are π bonds

One bond is σ and the other is π

It is diamagnetic