Schematic comparison between Earth and the different interior models of Venus. The S-free models correspond to ﹩{X}_{\mathrm{FeS}}^{\mathrm{Core}}=0﹩ while the nominal and S-rich compositions are defined as ﹩{X}_{\mathrm{FeS}}^{\mathrm{Core}}=0.08\mbox{--}0.15﹩ and ﹩{X}_{\mathrm{FeS}}^{\mathrm{Core}}=0.2\mbox{--}0.5﹩. The distances from the center for each layer and the core and mantle compositions are indicated for each case. The brown and red dashed segments indicate the lower bounds for the mantle transition zone, and the core–mantle boundary. The relative sizes of the different layers are on scale. The resulting permissible ranges for the MoI and some bulk elemental ratios are given next to the each sketch of the interior.