Consider the following complex ions, P, Q and R. The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is

Step-by-step solution

F - and H 2 O are weak field ligands so pairing of electrons in metal cations 3d subshell will not take place. now we have to cosider hybridization that is given in following diagram. ​ μ P = n n + 2 n = 5 = 5 × 7 = 3 5 BM μ Q = n ( n + 2 ) n = 3 = 3 × 5 = 1 5 BM μ R = n ( n + 2 ) n = 4 = 4 × 6 = 2 4 BM μ Q μ R μ P Q