Get promethium facts. Discover the history, properties, uses, and sources of the element with symbol Pm and atomic number 61.| Science Notes and Projects
Learn what a mineral is in geology and other sciences. Get the mineral definition and examples and learn about mineral properties and types.| Science Notes and Projects
Learn about the post-transition metals or basic metals. Get a list of elements and discover their shared properties.| Science Notes and Projects
Get bismuth facts. Discover the history, properties, uses, and sources of the element with symbol Bi and atomic number 83.| Science Notes and Projects