The electron in a singly ionized helium ion (He , ) is observed to move at a speed of

PHYSICS · Subjective · CBSE · Physics · Atoms · Atoms

Problem

The electron in a singly ionized helium ion (He

^+

Z=2

) is observed to move at a speed of

4.38\times10^{6}\,\text{m}\,\text{s}^{-1}

. Determine the orbital radius of the electron. (Constants:

k=8.99\times10^{9}\,\text{N}\,\text{m}^2\,\text{C}^{-2}

e=1.60\times10^{-19}\,\text{C}

m_e=9.11\times10^{-31}\,\text{kg}