You! the tendency of an atom to attract a pair of electrons that will bond is known as electron configuration electron sharing ionization electronegativity

The answer is D, electronegativity. I hope this helps! :) Have a great day! Mark me brainliest if you'd like!

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.