I was looking for pH of PCl5 and NaCl, then I have this curious question whereby are all ions neutral? Is that how you remember pH(s) for ions? I have bad memory and I'm trying to remember the pH(s) of molecules.
At the same time, I would like to ask:
Is there a way to remember the properties, reactivity of oxide, carbonate, hydroxide with water and oxygen, melting point, of period 3, group 2 and 7?