Get the answer to how many elements there are on the periodic table and find out how many elements occur naturally. How Many Elements Are There on the Periodic Table? Recently updated ! This entry was posted on May 17, 2022 by Anne Helmenstine (updated on May 17, 2022)
Learn how many atoms are in the world and how to perform the calculation. Compare this number to the number of way to order playing cards. How Many Atoms Are in the World? Recently updated ! This entry was posted on May 10, 2022 by Anne Helmenstine (updated on May 10, 2022)
Learn about group 5 on the periodic table. See which elements belong to this group and learn about their common properties. Group 5 Periodic Table Elements Recently updated ! This entry was posted on May 7, 2022 by Anne Helmenstine (updated on May 9, 2022)
Get the Poisson's ratio definition and formula. See a table of common Poisson's ratio values and learn about auxetic materials. Poisson’s Ratio Recently updated ! This entry was posted on May 4, 2022 by Anne Helmenstine (updated on May 9, 2022)
Get interesting lead facts including the history, properties, and uses of atomic number 82 with element symbol Pb. Lead Facts – Pb or Element Number 82 This entry was posted on April 16, 2022 by Anne Helmenstine (updated on April 18, 2022)
Learn about Abegg's rule in chemistry. See example, exceptions and why the rule is important in the octet rule and chemical bonding. Abegg’s Rule in Chemistry This entry was posted on April 3, 2022 by Anne Helmenstine (updated on April 5, 2022)
Get the coordinate covalent bond definition and examples. Another name for this bond is a dative bond or dipolar bond. Coordinate Covalent Bond – Dative Bond This entry was posted on April 2, 2022 by Anne Helmenstine (updated on April 4, 2022)
Learn about Lewis acid and base theory. See examples of Lewis acids and bases and learn how they differ from Bronsted acids and bases. Lewis Acid and Base Theory This entry was posted on March 27, 2022 by Anne Helmenstine (updated on April 7, 2022)
Learn why rings turn your finger green or black or even red. See which metals cause problems and how to prevent discoloration. Why Do Rings Turn Your Finger Green or Black? This entry was posted on March 22, 2022 by Anne Helmenstine (updated on March 28, 2022)