2)
Of the 4 diagrams, which is the correct representation of electric field lines if both charges are equal in magnitude and positively charged?
A) A
B) B
C) C
D) D

Most smaller stars don't have a radiative zone.

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.