What are weak acid radical ions and weak base radical ions?

There are many weak acid radicals, such as phosphate, carbonate, bicarbonate, sulfite, bisulfite, silicate, dihydrogen phosphate, acetate, hypochlorite, oxalate and borate, and many organic acids are weak acids. Remember this rule, the elements in the periodic table 1 1~ 17 are formed as central atoms.

There is a criterion for judging weak base cations. For metal elements, the more to the right in the periodic table, the weaker the alkalinity (1, 2 main groups are all strong bases), but if this cation is strongly hydrolyzed, it is already acidic, such as Fe3+, so the weak alkaline cations include copper ions, aluminum ions, ammonium ions, zinc ions, silver ions, ferrous ions, divalent manganese ions and so on.