But come on, why you gotta be picky
I'm saying why you want to have pick me

from Pro Era (Ft. Capital STEEZ, CJ Fly, Joey BADA$$ & Kirk Knight) – Interlude 47 Lyrics 4 on Rap Genius

Continuing with his physics/chemistry references he uses a metaphor to describe that this girls being picky.

Some basic chem here but when an atom loses or gains electrons in a chemical reaction is called an Ionic bond.

He uses the extra electron as the girl and he wants her to pick him (Cl element) and combine to make a new compound which shown below is Sodium Chloride (Salt).

To help improve the meaning of these lyrics, visit "Interlude 47" by Pro Era (Ft. Capital STEEZ, CJ Fly, Joey BADA$$ & Kirk Knight) Lyrics 4 and leave a comment on the lyrics box