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Sporcle is a trivia and pub quiz website created by trivia enthusiast Matt Ramme. [1] First launched on April 23, 2007, the website allows users to play and make quizzes on a wide range of subjects, with the option to earn badges by completing challenges.
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
JetPunk is an online trivia and quizzing website. The service offers a variety of quizzes in different topics, such as geography, history, science, literature, and music. [2] [3] The site offers quizzes in a variety of languages, including but not limited to: English, French, Spanish, Dutch, Italian, German, Finnish, Portuguese, and Polish. [4]
This list of chemical elements named after places includes elements named both directly and indirectly for places. 41 of the 118 chemical elements have names associated with, or specifically named for, places around the world or among astronomical objects.
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3 ; it is usually shown at the foot of the table to save horizontal space.
The periodic table of the chemical elements.The columns represent the groups.Groups 1, 2 and 13 to 18 constitute the main group. Sometimes groups 3 and 12, as well as the lanthanides and actinides (the two rows at the bottom), are also included in the main group.
A slightly more hawkish set of Federal Reserve regional bank presidents will become voters on the U.S. central bank's rate-setting panel in 2025, raising the chance that any further interest rate ...
1914 — Hackh's periodic table: First spiral to take account of Mosley's atomic numbers, and the first to show successively larger pairs of coils. Also interesting as H stands alone in the centre [77] 1925 — Courtines's a model of the periodic table: A helix with the appearance of a submarine or a castle [78]