The expression for the energy of the electron in an orbit is given by \(E = - \frac{e^{2}}{8\pi\epsilon_{0}r}\), then which of the following statement is/are true regarding the equation

(i)  The negative sign in the equation implies electron is trapped in the atom

(ii) If energy equal to \(E = +\frac{e^{2}}{8\pi\epsilon_{0}r}\)is given the electrons can be released from the atom

(iii) If the electron is away from the nucleus then the energy increases

(iv) The total energy of the electron depend only on the orbital radius