The radius of the second Bohr orbit,in terms of the Bohr radius,$a_{0}$,in $Li^{2+}$ is

Which of the following provisions of the Bohr atomic model of hydrogen turned out to be false?

Which of the following equations represents the velocity $(v)$ of the ejected electrons when a metal is struck with light of frequency $\nu$ and the threshold frequency of the metal is $\nu_0$? ($m_e =$ mass of electron and $h$ is Planck's constant).

Write down the postulates of Bohr's model for the hydrogen atom.

Give the Rydberg equation for all lines in the hydrogen spectrum.

The maximum energy is possessed by an electron when it is present: