What is the hydronium ion concentration ion of a solution with a poH of 7.20​

10^-7.20 or 1×10^-7.20mol.dm^-3

Explanation:

[H3O^+]= -log[H3O^+]

=antilog(-pH)

=antilog(-7.20)

=10^-7.20 mol.dm^-3

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.