At first glance, it just looks like she just listed a bunch of random elements. Lucky for you folks, I was a bit of a nerd in high school and I basically killed chemistry in high school. I remember enough to know that the first four elements spell out “F—k” when you use their abbreviations. The whole thing says, “f—k bitches, get money.”
Obviously this only passed through the yearbook’s censor because the staff is most likely made up of liberal arts kids who couldn’t care less about chemistry. I know I stopped after biology turned out to be my enemy.