Question

List of ions responaible to make water alkaline

Answer 1

OH- ions are responsible for any liquid to be alkaline .

Answer 2

Hola friend!!
Rajdeep here...

Let me give you an information:
Alkali metals (all metals of group 1) are soluble in water and Hence makes water alkaline.

So ions are:
Li+
Na+
K+
Rb+
Cs+

Additional:
Ca2+ is sparingly soluble.
NH4+ is soluble.

Again, hydroxyl ions(OH-) are responsible for alkalinity of water.

Thanks!!