PHYSICAL PROPERTIES
Research Opportunities at The Atom Project- By Arshyia Mehran
SOURCE- WIKIPEDIA
Bismuth is a brittle metal with a dark, silver-pink hue, often with an iridescent oxide tarnish showing many colors from yellow to blue. The spiral, stair-stepped structure of bismuth crystals is the result of a higher growth rate around the outside edges than on the inside edges. The variations in the thickness of the oxide layer that forms on the surface of the crystal cause different wavelengths of light to interfere upon reflection, thus displaying a rainbow of colors. When burned in oxygen,  bismuth burns with a blue flame and is oxide forms yellow fumes. Its toxicity is much lower than that of its neighbors in the periodic table, such as lead, antimony and polonium.
SOURCE- PS ANALYTICAL
Atomic Mass: 208.98040
Melting Point: 271.5°C - 544.7 °K
Boiling Point: 1564°C - 1837°K
Number of Protons/Electrons in Bismuth: 83
Number of Neutrons in Bismuth: 126
Crystal Structure: Rhombohedral
Density @ 300 K: 9.75g /cm3
Color of Bismuth : white with a pinkish tinge