Given : \\\\(m_h= 1.67\ imes 10^{-27} \\ kg\\\\)Net charge on hydrogen atom \\\\(q = (e+\\Delta e)-e = \\Delta e\\\\)Let the distance between them be \\\\(d\\\\).Equating gravitational force and the electrostatic force, we get\\\\(\\dfrac{Gm_h^2}{d^2} = \\dfrac{k (\\Delta e)^2}{d^2}\\\\)Or \\\\(\\dfrac{(6.67\ imes 10^{-11})(1.67\ imes 10^{-27})^2}{d^2} = \\dfrac{(9\ imes 10^9)(\\Delta e)^2}{d^2}\\\\)\\\\(\\implies \\ \\Delta e = 2.06\ imes 10^{-37} \\ C\\\\)The correct answer is option D.