Decide giving reasons which one of the following exhibits the property indicated :L
(i) `Sc^(3+)` and `Cr^(3+)` exhibit paramanetism (ii) V or Mn exhibits more number of oxidation sates (at. No Sc= 21 , V =23 , Cr = 24 , Mn=25)

Decide giving reason which one of the following pairs has the property indicated. (i) Fe or Cu has higher lower magnetic moment.

Which of the following ions is the most stable in aqueous solution ? (At . No . Ti = 22, V = 23, Cr = 24, Mn = 25)

How many of these metals can show +3 oxidation state also. Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn

(i) Which one of the following is more paramagnetic Fe^(2+) or Fe^(3+)? Explain. (ii) What is the number of unpaired electrons in Mn^(2+) ion? (At.no. Mn= 25).

How would you account for the following ? (i) With the same d-orbital configuration (d^(4)) Cr^(2+) is reducting agent while Mn^(3+) is an oxidizing agent. (ii) The actionoids exhibits a larger numbe of oxidation states than the corresponding members in the lanthanoid series. (iii) Most of the transition metal ions exhibit characteristic in colours in aqueous solutions.

How would you account for the following ? (i) With the same d-orbital configuration (d^(4)) Cr^(2+) is reducting agent while Mn^(3+) is an oxidizing agent. (ii) The actionoids exhibits a larger numbe of oxidation states than the corresponding members in the lanthanoid series. (iii) Most of the transition metal ions exhibit characteristic in colours in aqueous solutions.

Giving reasons indicate which one of the following would be coloured ? Cu^(+), V^(2+),Sc^(3+),Ni^(2+) (atomic number : Cu = 29 , V = 23 , Sc=21 , Ni = 28)

Out of the following transition elements, the maximum number of oxidation states are shown by (a) Sc(Z=21) (b) Cr (Z=24) (c) Mn (Z=25) (d) Fe (Z=26)

The correct of decreasing second ionisation enthalpy of Ti(22),V(23),Cr(24) and Mn(25) is

The correct of decreasing second ionisation enthalpy of Ti(22),V(23),Cr(24) and Mn(25) is