Which has maximum pH in aqueous solution ?

which of the following ion has maximum mobility in aqueous solution

which of the following ion has maximum mobility in aqueous solution

Which of the following ions has the maximum magnetic moment in aqueous solution ?

Which of the following ions has the maximum magnetic moment in aqueous solution ?

Which of the following aqueous solutions has pH greater than 7 ?

pH of a solution produced when an aqueous solution of pH 6 is mixed with an equal volume of an aqueous solution of pH 3 is about