Question

When the last electron of an atom was filled in the 3p subshell, the subshell electronic configuration wad 3p4 . Answer the following questions.
a) Complete subshell electronic configuration.
b) Atomic number.
c) Group number.
d) Period number.

Answer 1

Answer:

Answer

Complete the electronic configuration is 1s

2

,2s

2

,2p

6

,3s

2

,3p

6

,3d

8

,4s

2

. and atomic number is 28.

Period number: 8+2=10, ∵ group number = No. of valence electron