Out of ions `Co^(2+)`,Cr^(3+), (`Sc^(3+)` which will give coloured aqueous solution and what will be the magnetic behaviour of each ion ? (Atomic number of Co = 27, Sc = 21 and Cr = 24).

Out of the ions Ag^+ , Co^(2+) and Ti^(4+) which will give coloured aqueous solution and what will be the magnetic behaviour of each ion ? (Atomic number of Ag = 47, Co = 27 and Ti = 22).

Out of the ions Ni^(2+) , Zn^(2+) and Cu^2+) , which will give coloured aqueous solution and what will be the magnetic beghaviour of each ion ? (Atomic number of Ni = 28, Zn =30 and Cu = 29).

Out of Co^(2+) , Zn^(2+) and Cu^+(2+) which will give aqueous coloured solution ?

Out of Ag^+ and Co^(2+) which one will be coloured and why? (Atomic number of Ag is, 47 and Co is 27).

Out of Mn^(3+) and Cr^(3+) which is more paramagnetic and why ? (Atomic nos. Mn = 25, Cr = 24)

Write the name, stereochemistry and magnetic behaviour of the following . (At. nos. Mn = 25, Co = 27, Ni = 28) (Co(NH_3)_5Cl]Cl_2 .

Which of the Co^(2+) , Fe^(2+) , Sc^(3+) are coloured and why ?

The pair having the same magnetic moment is (At No. Cr = 24, Mn = 25, Fe = 26, Co=27)

Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25.