Bismuth (a) and cadmium (b) form a eutectic at 144°C and xa 5 0.45. They are also completely immiscible in the solid phase. The melting points for bismuth and cadmium are 271°C and 321°C, respectively. The enthalpies of fusion of these elements are 210.46 kJ/mol and 26.1 kJ/mol, respectively. Estimate the parameters of an appropriate model for gE based on these data.