Question

Write the names, groups, periods, valence electron and blocks of the elements that are represented by each of the following electron configurations respectively:

A. [Xe]6s2 4f145d106p6

B. 1s2 2s2 2p6 3s2 3p6 4s2 3d5

Answer 1

A.The element is Lead ;group 14,period 6, 4 valence electrons,

B. The element is Manganese ;Group 7,Period 4,7 valence electrons.