Fluorine gas exerts a pressure of 297 torr. When the volume changes to 250 mL at STP. What was the original volume?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.