Which rule or principle is being broken here?3

1s2 2s2 2p5 3s2

the school  broke principle his own school rules

Explanation: also

Monster (ayy)

You get in my way, I'ma feed you to the monster (yeah)

I'm normal during the day, but at night, turn to a monster (yeah)

When the moon shines like Ice Road Truckers

I look like a villain outta those blockbusters

Godzilla, fire spitter, monster

Blood on the dance floor, and on the Louis V carpet

Fire, Godzilla, fire, monster

Blood on the dance floor, and on the Louis V carpet

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

4d^55s^1 ( third choice)