Consider the following statements. (P) Blue salt K_(4)[Mn(CN)_(6)].3H_(2)O is isostructural with the hexacyanoferrate (II) and the former complex is paramagnetic but later one is diamagnetic. (Q) In the series of isoelectronic species [V(CO)_(6)]^(-), [Cr(CO)_(6)]" and "[Mn(CO)_(6)]^(+),from the vanadium to manganese complexes there is reduction in the strength of the bonding between metal and carbon and an increase in that in the carbonyl group (i.e.CO). (R ) Chlorotritriphenylphosphinerhodium (I) is a square planar diamagnetic complex which is used as a homogeneous catalyst in hydrogenation of alkenes. (S) Like [Co(NH_(3))_(4)Cl_(2)]^(+) ion, [Co(en)_(2)Cl_(2)]^(+) ion can exist in cis and trans forms adn neither can display optical activity. (T) Ni(CO)_(4)" and "NiCl_(2)(PPh_(3))_(2) have same hybridization but different, magnetic moment and effective atomic number.

Consider the following statements. (P) Blue salt K_(4)[Mn(CN)_(6)].3H

1.	Consider the following statements. (P) Blue salt K_(4)[Mn(CN)_(6)].3H_(2)O is isostructural with the hexacyanoferrate (II) and the former complex is paramagnetic but later one is diamagnetic. (Q) In the series of isoelectronic species [V(CO)_(6)]^(-), [Cr(CO)_(6)]" and "[Mn(CO)_(6)]^(+),from the vanadium to manganese complexes there is reduction in the strength of the bonding between metal and carbon and an increase in that in the carbonyl group (i.e.CO). (R ) Chlorotritriphenylphosphinerhodium (I) is a square planar diamagnetic complex which is used as a homogeneous catalyst in hydrogenation of alkenes. (S) Like [Co(NH_(3))_(4)Cl_(2)]^(+) ion, [Co(en)_(2)Cl_(2)]^(+) ion can exist in cis and trans forms adn neither can display optical activity. (T) Ni(CO)_(4)" and "NiCl_(2)(PPh_(3))_(2) have same hybridization but different, magnetic moment and effective atomic number.
Answer» P, R and T Q, R and S Q, R and T R, S and T Solution :(Q) As `E^(-)` density on `Muarr`,M-C bond becomes stronger while C-O bond becomes weaker. (T) `[overset(+2)NiCl_(2)(PPh_(3)) implies` tetrahedral but `d^(8)` has 2 uu.p. electron. Correct statements : P,Q,R,T.