Find the answer that best completes the statements. 1. the properties of cadmium and zink are a. comparable b. identical 2. the ionic radius of copper is to that of cadmium. a. similar b. equal 3. mercury, cadmium has a high boiling point. a. like b. compared to 4. the melting points of cadmium and zink are those of silver and gold. a. lower than b. as low as 5. copper and gold have high boiling points. a. comparatively b. equally 6. the atomic radius of cadmium is that of mercury. a. as high as b. not as high as 7. the specific gravity of cadmium and copper are a. similar b. identical