Amongst the following which one.has the highest magnetic moment value? 1) (Cr(H2O)6)^3+ 2) (Fe(H20)6)^2+ 3) (Zn(H2O))^2+

Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H 2 ​ O) 6 ​ ] 3+ (ii) [Fe(H 2 ​ O) 6 ​ ] 2+ (iii) [Zn(H 2 ​ O) 6 ​ ] 2+

The d-electron configurations of Mn^(2+) , Fe^(2+) , Co^(2+) and Ni^(2+) are 3d^(5) , 3d^(6) , 3d^(7) and 3d^(8) respectively. Considering H_(2)O as a weak field ligand, which of the following aqua complexes will have the minimum spin only magnetic moment ? [ N i ( H 2 O ) 6 ] 2 + [ C o ( H 2 O ) 6 ] 2 + [ F e ( H 2 O ) 6 ] 2 + [ M n ( H 2 O ) 6 ] 2 +

The d-electron configuration of Cr^(2+) , Mn^(2+) , Fe^(2+) and Co^(2+) are d^(4) , d^(5) , d^(6) and d^(7) respectively. Which one of the following will exhibit minimum paramagnetic behaviour ? [ C r ( H 2 O ) 6 ] 2 + [ M n ( H 2 O ) 6 ] 2 + [ F e ( H 2 O ) 6 ] 2 + [ C o ( H 2 O ) 6 ] 2 +

Among the following compounds, the one with lowest pKa value is : CH-=CH , C_(6)H_(6) , CH_(3)OH , H_(2)O

Balance the following equation by the half reaction method. Fe^(2+) (aq) + Cr_2O_7^(2-) (aq) +H^(+) (aq) rarr Fe^(3+) (aq) + Cr^(3+) (aq) +H_2O (I)

In which of the following S has highest oxidation state? Na_2 S_2 O_6 , S_2 Cl_2 , S_8 , H_2 SO_4

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex.. i) K[Cr(H_2 O)_2(C_2 O_4)_2] 3H_2 O ii) [CrCl_3(Py)]_3 iii) K_4[Mn(CN)_6] iv) [Co(NH_3)_5 Cl] Cl_2 . v) Cs[FeCl_4]

Consider the following complex ions P, Q and R: P=[FeF_6]^(3-), Q=[V(H_2O_6)]^(2+) ,R=[Fe(H_2O)_6]^(2+) The correct order of the complex ionis, according to their spin-only magnetic moment values (in BM)is