The following order are given along with their mentioned properties

(P) Mg < Na < Sr < Ba [order of atomic size]

(Q) ${\mathrm{M}}^{+}>{\mathrm{M}}^{+2}>{\mathrm{M}}^{+3}$ [M = hypothetical element, order of${\mathrm{IP}}_1$ of respective ion]

(R) F > Cl> Br> I [order of electronegativity]

(S) ${\mathrm{Al}}_2{\mathrm{O}}_3<{\mathrm{P}}_2{\mathrm{O}}_5<{\mathrm{SO}}_3<{\mathrm{Cl}}_2{\mathrm{O}}_7$ [order of basic nature]

(T) ${\mathrm{F}}^{-}>{\mathrm{Cl}}^{-}>\mathrm{Br}>{\mathrm{I}}^{-}$ [order of ionic mobility in aqueous solution] Which option represent group incorrect order?

The nuclear pull on the outer electrons grows as nuclear charge increases. As a result, the outer electrons are firmly trapped, increasing the ionisation potential.

${\mathrm{M}}^{+}>{\mathrm{M}}^{+2}>{\mathrm{M}}^{+3}$

Basicest is alkali metal oxide: ${\mathrm{Na}}_2\mathrm{O}$

Amphoteric describes aluminium oxide. ${\mathrm{Al}}_2{\mathrm{O}}_3$
Acidic oxide is non-metallic oxide: ${\mathrm{Cl}}_2{\mathrm{O}}_7$

${\mathrm{Al}}_2{\mathrm{O}}_3<{\mathrm{P}}_2{\mathrm{O}}_5<{\mathrm{SO}}_3<{\mathrm{Cl}}_2{\mathrm{O}}_7$

When atomic size rises, ionic mobility falls.
given that the atomic size is ${\mathrm{F}}^{-}<{\mathrm{Cl}}^{-}<{\mathrm{Br}}^{-}<{\mathrm{I}}^{-}$,

then ionic mobility will be in this sequence. ${\mathrm{F}}^{-}>{\mathrm{Cl}}^{-}>{\mathrm{Br}}^{-}>{\mathrm{I}}^{-}$
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