4. Label the following diagrams as elements, compounds, or mixtures. Colored circles represent different atoms. Circles that are touching represent atoms that are chemically bonded together. (2
points each)

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.

The state or quality of being humid.a quantity representing the amount of water vapor in the atmosphere or a gas.

The answer is c.  h+  and oh−  react to form water (h2o). i just took the test and i got it right. hope this !