Figure illustrates the effect of noise as electron density difference maps in planes across the different molecules, while Table quantifies noise (and mitigation) at selected critical points in the density. Because our calculations rely on a hybridquantum-classical algorithm, where orbitals are handled on a classical computer, electron densities are always constrained by the symmetries inherent to those orbitals. Such symmetries can also protect against noise along certain mirror planes. For example, Table shows how the electron density at BCPs reported for HCN are all invariant to noise. This robustness is not general but a consequence of the small (4e, 4o) active space used. Because the 𝜋 and 𝜋 * orbitals have nodal planes along the bond axis, it is only in the Laplacian of 𝜌(𝑟) that one can distinguish between noisy, mitigated, and noise-free results for these points within HCN. For Li2, the situation is reversed, and the actual worsening of results following adaptation of our error mitigation is attributed to the rescaling of the 2𝜎 occupation, which substantially affects CPs on the boundary of the NNA basin.