Q18. The angular momentum of an electron in a hydrogen atom is proportional to : (Where $r$ is the radius of orbit of electron) (1) $r$ (2) $\sqrt { \mathrm { r } }$ (3) $\frac { 1 } { \sqrt { \mathrm { r } } }$ (4) $\frac { 1 } { r }$
Q18. The angular momentum of an electron in a hydrogen atom is proportional to : (Where $r$ is the radius of orbit of electron)\\
(1) $r$\\
(2) $\sqrt { \mathrm { r } }$\\
(3) $\frac { 1 } { \sqrt { \mathrm { r } } }$\\
(4) $\frac { 1 } { r }$