Consider 3^rd orbit of He^+ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K =9 × 10^9 constant, Z =2…

Consider $\displaystyle 3^{\text {rd }}$ orbit of $\displaystyle \mathrm{He}^{+}$ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given $\displaystyle \mathrm{K}=9 \times 10^9$ constant, $\displaystyle \mathrm{Z}=2$ and h(Planck's Constant) $\displaystyle =6.6 \times 10^{-34} \mathrm{~J} \mathrm{~s}$ ]