In the process of attempting to characterize a substance, a chemist makes the following observations:
(a) the substance is a silvery white, lustrous metal.
(b) the substance melts at 649 ∘c,
(c) the substance boils at 1105 ∘c.
(d) the density of the substance at 20 ∘c is 1.738 g/cm3.
(e) the substance burns in air, producing an intense white light.
(f) the substance reacts with chlorine to give a brittle white solid.
(g) the substance can be pounded into thin sheets or drawn into wires.
(h) the substance is a good conductor of electricity.