Consider the following order : 

(a) ${\mathrm{CH}}_4<{\mathrm{CCl}}_4<{\mathrm{CF}}_4$ : E.N. of central atom C

(b) ${\mathrm{Mg}}^{+2}<{\mathrm{K}}^{+}<{\mathrm{S}}^{-2}<{\mathrm{Se}}^{-2}$ : Ionic radius

(c) ${\mathrm{Be}}_{\left(\text{aq }\right)}^{+2}>{\mathrm{Mg}}_{(aq.)}^{+2}>{\mathrm{Ca}}_{\left(aq\right)}^{+2}$ : Ionic mobility

(d) ${\mathrm{Be}}^{+2}>{\mathrm{Li}}^{+}>{\mathrm{Al}}^{+3}$ : Hydrated size

(e) $\mathrm{Be}>\mathrm{Li}>\mathrm{Cg}$ : Reducing power

(f) ${\mathrm{F}}_{\left(aq\right)}^{\ominus }>{\mathrm{Cl}}_{\left(aq\right)}^{\ominus }>{\mathrm{Br}}_{\left(aq\right)}^{\ominus }$ : Electrical conductance at infinite dilute solution

Then calculate value of$|x-y{|}^2$, where x and y are correct and incorrect orders respectively.