hydrogen undergoes a polytropic process from 100kPa, 300K to 500K. Determine the change in internal energy

300 + 100 +500 =900

that is the change in internal energy

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.