Answer
See explanation below.
Work Step by Step
A)
Transition elements in period 5 differ in the number of d electrons.The general electronic configuration of period 5 transition elements is:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4dx
B)
Transition elements in period 6 includes f sublevel electrons.The general electronic configuration of period6 transition elements is:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5dx