Students of different grades are given the same jigsaw puzzle to assemble. The time they took to assemble it was measured. What is the dependent Variable?
a) time took to assemble it
b) There is not one
c) the jigsaw puzzle
d) different grade levels

please help me!

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.

Answer246 k;

Answerthe same as;