⚠️HELP PLS THX⚠️ 10 grams of calcium-37 remain after 700 milliseconds (0.700 seconds) . How much calcium was in the original sample ?

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.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.