Two electrons are considered: one in the orbit of the singly ionised helium atom (He…
CHEMISTRY · Single correct · CBSE · Chemistry · Structure of Atom · Structure of Atom
Problem
Two electrons are considered: one in the n=2 orbit of the singly ionised helium atom (He+) and the other in the n=3 orbit of the hydrogen atom. Which statement about their orbital speeds is correct?
(a) The electron in hydrogen moves faster.
(b) Both electrons have the same speed.
(c) The comparison cannot be made without additional information.
(d) The electron in He+ moves faster.