(a). Why second asnd third transition series elements show similar size?  (b). Why electronic
Channel: Doubtnut
Date: 2020-07-26

(a). Why second asnd third transition series elements show similar size?  (b). Why electronic configuration of lanthanoids not known with certainty?  (c). The electronic configuration of actinide elements are not known with certainty. Explain.  (d). Why there is similarties (horizontal and vertical) in successive members of the transition series?