Find the speed of the electron in the ground state of hddrogen atom. The description of ground state is given in the previous problem.

Explanation

`F_e` from previous problem `No.18`
` =8.2xx10^-8N, V=? `
Now, `M_e = 9.12xx10^-31kg,`
` R=0.53xx10^-10m `
Now, `F_e =(M_eV^2 )/R `
` So, V^2=0.4775xx10^13 `
` =4.775xx10^12m^2//s^2 `
` V=2.18xx10^6 m//s`