Ok. I've read through your other posts so i think i might know where this is going.
First, I'm not sure that a marijuana growing forum is the appropriate place to ask questions about chemistry. We could talk about the periodic chart of the elements; protons, neutrons, electrons; covalent and ionic bonds; atoms, molecules, mixtures, suspenions, blah, blah, blah. But I'm not sure that would be helpful. If you're truly interested in chemistry, i would suggest the first thing you do is take a course in basic chemistry. Now on to the important stuff....
@Wattzzup @Merlin1147 are correct. Nitrogen, phosphorous, potassium (N,P,K), calcium, (Ca), magnesium (Mg), along with an entire host of other elements are required for healthy plant growth. I think your line of questioning is leading to how those specific elements (or nutrients) are delivered to your plant. Correct?
There are several different options for growing. Soil, soilless media (DTW), straight water based hydroponics (Kratky, DWC, flood and drain and others), aeroponics, aquaponics.... Each of these options have well defined and proven methods for the delivery of the required nutrients. Some are easier than others.
From your previous posts, it appears you are attempting to grow in coco coir. Perhaps the simplest well defined and proven method for growing in coco is Drain to Waste (DTW). There are several popular, commercially available nutrient formulas available to you. Everyone has their favorite and there's lots of discussion on the forums about which is "The Best". Choose one (preferrably the least complicated) and either follow the manufacturer's directions or directly copy what someone else has done. Search for Bill Ward (not the Black Sabbath drummer) on youtube. He runs a really simple DTW. The results speak for themselves.
As a hobby grower, you don't have to worry about the chemistry to be incredibly successful.
