Class 12 NEET Chemistry D And F Block Elements Questions

Element      
No. of oxidation states 3  4  5  6
Given order is correct
Magnetic moment (μ)=√n(n+2) B.M
For Ti3+‌‌n=1,‌‌‌μ=√1(1+2)=√3 B.M.
For V3+‌‌‌n=2,‌‌‌μ=√2(2+2)=√8 B.M
For Cr3+‌‌n=3,‌‌‌μ=√3(3+2)=√15 B.M
For Mn3+‌n=4,‌‌μ=√4(4+2)=√24 B.M
Thus magnetic moment : Ti3+<V3+<Cr3+<Mn3+
Melting point order : Mn  <  Ti  < Cr  < V
         1245°C  1668°C 875°C  1900°C
2nd ionisation enthalpy order
    Ti < V <  Mn < Cr
kJ/mol  1320 1376 1513  1635