We use a kind of plant growth hormone to regular plant growth. We dissolve 5mg of the solution into 2kg of water. What is the dosage of the solution in ppm?

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.