`CrO_4^(2-)+H^(+)to[X]+H_2O`
Give the answer of the following questions for the reaction product [X]
(P)In how many M-O bonds, the bond length are equal ?
(Q)What is the oxidation state of the central metal ion ?
(R)What is the magnetic moment of the central metal ion ?
(S)How many peroxide linkages are there in the product formed by the reaction of [X] with `H_2O_2` in acidic medium ?

Answer

6,6,0,2

Explanation

`2overset(-8)(Cr)O_4^(2-)+2H^(+)toCr_2O_7^(2-)+H_2O`
(P)
Six Cr-O bonds are equal in lengths because of resonance.
(Q)`Cr_2O_7^(2-)`
`2x+7(-2)= -2` or x=6
(R)Electronic configuration of `overset(+6)(Cr)` is `[Ar]^(18)3d^(0)4s^(0)`.No unpaired electron so magnetic moment is zero (0).
(S)`Cr_2O_7^(2-)+2H^(+)+4H_2O_3to2CrO(O_2)_2+5H_2O`