Gravitational force between H-atom and a particle of mass ‘m’ is given by Newton’s law as $\mathrm{F}=\frac{\mathrm{GMm}}{{\mathrm{r}}^2}$, where r is in km. In this equation value of ‘M’ is

M = m_proton + m_electron

M = m_proton + m_electron - $\frac{\mathrm{B}}{{\mathrm{C}}^2}$ (Here B = 13.6ev)

M is not related to mass of hydrogen atom

M = m_proton + m_electron - $\frac{\mathrm{V}}{{\mathrm{C}}^2}$ (Here V is magnitude of P.E of electron in H atom)