Calculate the speed of the electron in the first Bohr orbit of singly-ionised helium ( )

CHEMISTRY · Subjective · CBSE · Chemistry · Structure of Atom · Structure of Atom

Problem

Calculate the speed of the electron in the first Bohr orbit of singly-ionised helium (

\mathrm{He}^+

). Take

e = 1.6\times10^{-19}\,\text{C}

m = 9.1\times10^{-31}\,\text{kg}

k = 9\times10^{9}\,\text{N}\,\text{m}^2\,\text{C}^{-2}

and

h = 6.63\times10^{-34}\,\text{J}\,\text{s}