3.) what type of energy is released with the faucet? * a.) light b.) electrical c.) mechanical 4.) what type of energy from the sun? * a.) light b.) electrical c.) mechancial

C and A, in order... space them out more when you ask a question.. i had to re-read it.

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.