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

Options

A. 1
B. 8
C. 4
D. 16

Answer

B

Explanation

`a = v^(2)/( r)`
`:. A prop ((z)^(2))/((l//z))` `(for n = 1)`
or `a prop z^(3)`
`:. (a_(1))/(a_(2)) xx ((2)/(1)) ^(2) = 8`