Name the first and last element in the second transition series.

Define the term transition element.

Why does Mn(II) show maximum paramagnetic character among the bivalent ions of the first transition series?

Comment on the statement that elements of the first transition series posses many properties different form those of heavier transition elements.

Name the lightest and the heaviest elements (in terms of density) among the transition elements.

What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements ?

Name any two transition elements and any two inner transition elements.

The first and last element of an A.P are 7 and 55 respectively. The sum of 10^(th) element from the beginning and 10^(th) element from the end is

The first and last elements of an A.P are a and l respectively. If S is the sum of all terms of the A.P, then the common difference is

In a G.P the sum of the first and last terms is 66, the product of the second and the last but one is 128, and the sum of the terms is 126 If the decresing G.P is considered , then the sum of infinite terms is

Name the metal of the 1^(st) row transition series that has maximum no. of unpaired electrons in its ground state.