The ratio between total acceleration of the electron in singly ionized helium atom and hydrogen atom (both in ground state) is

Explanation

`a=v^(2)//rRightarrow aprop(Z^(2))/((1//z))Rightarrow aalphaZ^(3)`
therefore `(a_(1))/(a_(2))=((Z_(1))/(Z_(2)))^(3)=(2/1)^(3)=8`