906K views · 10K reactions | Discovery of Radioactivity. Discovery Of Radium. | Physics Theories | Facebook

6.9K views · 515 reactions | In July 1898, Marie Sklodowska Curie and Pierre Curie published work where they mentioned the term radioactivity for the first time. During that same year, the two Nobel Prize laureates discovered two new elements: polonium (in June 1898) and radium (in December 1898). Watch the story behind the discovery of polonium, as well as radium. #NobelPrize | Nobel Prize | Facebook

Alkaline Earth Metals Explained: Atomic Properties & Real-World Uses for Grade 8 Chemistry This instructional video introduces grade 8 students to the alkaline earth metals—Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium. It compares these elements based on atomic number, atomic mass, and the numbers of protons, electrons, and neutrons. The video also highlights their important applications in fields like construction, electronics, and medicine. Clear diagrams and simple animations