Among the following how many metal ions have green colour in their hydrated state?
\(V^{+3},Cr^{+3},Mn^{+2},Mn^{+6},Ni^{+2},Mn^{+3},CO^{+3}\)

Among the following series of transition metal ions, how many metals ions have d^(2) electronic configuration Fe^(4+), V^(3+), Sn^(2+), Au^(3+)Ti^(2+), As^(3+), Cr^(3+), Mn^(5+)Co^(3+), Zr^(2+), Cd^(2+), Mo^(4+), La^(2+), Ta^(4+), Co^(6+), Ni^(4+)

which of the ion pairs, magnetic property depends on the strength of ligand present in the complex? (A) \(Ti^{+3},V^{+3}\) (B) \(Cr^{+3},Mn^{+4}\) (C) \(Cr^{+2},Mn^{+3}\) (D) \(Mn^{+2},Fe^{+3}\)

Out of the following how many of them have magnetic moment value sqrt(24)BM . Ti^(2+),Ti^(3+),V^(2+),Cr^(2+),Cr^(3+),Mn^(2+),Fe^(2+) .

How many of the following ions have the same magnetic moments ? Fe^(2+)Mn^(2+)Cr^(2+)Ni^(2+)

How many of the following ions have spin mangnetic moment more than 4 B.M . Ti^(3+), Cu^(+), Ni^(2+),Fe^(3+),Mn^(2+), Co^(2+)

Among the oxides gives below, how many are acidic ? CrO_3, Mn_2 O_7, CO, SO_2 .

Out of the following how many oxides are acidic. MnO,Mn_2O_3,MnO_2,MnO_3,Mn_2O_7

Among the following series of transition metal ions, the one in which all metal ions have 3d^(2),3p^(6) electronic configuration is (Atomic no. of Ti=22,V=23,Cr=24,Mn=25 )