Advertisements
Advertisements
प्रश्न
How would you account for the following?
Transition metals exhibit variable oxidation states.
Advertisements
उत्तर
(i) The variable oxidation states of transition elements are due to the participation of ns and (n−1)d-electrons in bonding. Lower oxidation state is exhibited when ns-electrons take part in bonding. Higher oxidation states are exhibited when (n − 1) d-electrons take part in bonding.
APPEARS IN
संबंधित प्रश्न
Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which elements shows the maximum number of oxidation state and why ?
Electronic configuration of Mn2+ is ____________.
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is ______.
Match the properties given in Column I with the metals given in Column II.
| Column I (Property) | Column II (Metal) | |
| (i) | An element which can show +8 oxidation state | (a) \[\ce{Mn}\] |
| (ii) | 3d block element that can show | (b) \[\ce{Cr}\] |
| upto +7 oxidation state | (c) \[\ce{Os}\] | |
| (iii) | 3d block element with highest melting point | (d) \[\ce{Fe}\] |
Answer the following question:
Which element of the first transition series has highest second ionisation enthalpy?
Among the following pairs of ions, the lower oxidation state in aqueous solution is more stable than the other in:-
The electrode potential of M2+/M of 3d-series elements shows the positive value for ______.
Which of the following characteristics of transition metals is associated with their catalytic activity?
Which of the following ions has the electronic configuration 3d6?
(Atomic number: Mn = 25, Co = 27, Ni = 28)
