How many moles of gas would you have if you had a volume of 38.0 L under a pressure of 1430 mmHg at standard temperature?

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the answer is option a.