Question

1. The outermost sub shell electronic configuration of an element Y is 3s2 3p1(symbol is not real)
a) Write the sub shell electronic configuration of this element.
b) To which period and block does this element belong?
c) Write the outermost subshell electronic configuration of noble belonging to same period.​

Answer 1

Answer:

1. a) Electronic configuration of Y - 1s² 2s² 2p⁶ 3s² 3p¹ (According to Afbau's principle)

b) As it have outer most electron in the 3rd shell, it belongs to 3rd period. Also it have last electron in p-subshell, thus it belongs to p-block.

c) Outermost subshell electronic configuration of noble gas belongs to same period is 3p⁶, it is the most stable E.C of that period.

hope this will help you