Question
Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 $\mathrm{\mathop A\limits^o }$. The radius of the third Bohr orbit of He$^+$ is __________ picometer. (Nearest Integer)
Correct Answer
270
Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 $\mathrm{\mathop A\limits^o }$. The radius of the third Bohr orbit of He$^+$ is __________ picometer. (Nearest Integer)