According to Rutherford's model, the positive charge is concentrated in a very small volume.
Statement 1 (S1): According to Rutherford, most of the space inside an atom is occupied by positive charge.
Statement 2 (S2): Mass of an atom is concentrated in a very small volume within the atom.
Statement I- Thomson's atomic model could not explain the result of scattering experiment performed by Rutherford. Statement II- According to Rutherford, majority of mass was concentrated in a minute, positively charged region (the nucleus) surrounded by electrons.