Which best describes activation energy? the maximum amount of energy required to end a chemical reaction the amount of energy absorbed in an endothermic reaction the minimum amount of energy required to start a chemical reaction the amount of energy released in an exothermic reaction

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 right answer is c i just did the question.