![]() Post memes/jokes in /r/chemistrymemes and /r/chemistryjokes. Any such posts will be deleted.Īsk education and jobs questions in the current weekly topic. If you're looking for a more concentrated, advanced discussion of chemistry topics among professionals and grad students, check out /r/Chempros.īefore asking "What chemical is this?" see this chart. Click here for the OSHA chemical data site and here for a multicompany MSDS aggregate search. (Image credit: Karl Tate, contributor) Scientists. If you spill/injure yourself contact medical professionals and read the MSDS, do not post to this reddit. The classic Periodic Table organizes the chemical elements according to the number of protons that each has in its atomic nucleus. Yes links to blogs, images, videos, comics, and infographics are okay especially if they are on your personal website. No physorg, sciencedaily, or other press release aggregator spam! If a caption or explanation is included this helps, but please use your discretion.īefore asking about chemical drawing/illustration programs, look at your school's IT/software website and see if they provide an institutional license of ChemDraw (hint: if they have a chemistry department, they will) Likewise, simple pictures of uninteresting and garden variety chemistry-related things are not appreciated. Elements that have similar chemical properties are grouped in columns called groups (or families) A column of elements on the periodic table. No memes, rage comics, image macros, reaction gifs, or other "zero-content" material. ![]() However, academic discussions on pharmaceutical chemistry and the science of explosives are permitted. There are 18 numbered groups in the periodic table the 14 f-block columns, between groups 2 and 3, are not numbered. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. In chemistry, a group (also known as a family) 1 is a column of elements in the periodic table of the chemical elements. Element Lead (Pb), Group 14, Atomic Number 82, p-block, Mass 207.2. Germanium lies within the diagonal line marking the boundary between metals and nonmetals, so it should be a metalloid.Rules: Violating a rule will result in a ban.Īsk homework, exam, lab, and other undergraduate-level questions at ChemicalForums otherwise it will be deleted.ĭiscussions on illicit drug synthesis, bomb making, and other illegal activities are not allowed and will lead to a ban. Groups 1, 2, and 1318 are the main group elements, listed as A in older tables. Periodic Table of Videos Created by video journalist Brady Haran working with chemists at The University of Nottingham.Magnesium lies to the left of the diagonal line marking the boundary between metals and nonmetals, so it should be a metal.In addition, you will learn about the different properties of the periodic table groups, periods, and families. ![]() We will take a close look at the groups of the periodic table. This method for numbering the groups in the periodic table is known as the '1-18 System.' While this numbering convention is widely-used. The group number increases by one for every additional column, up to a maximum of 18. \), selenium lies above and to the right of the diagonal line marking the boundary between metals and nonmetals, so it should be a nonmetal. Core Concepts: In this tutorial, you will learn how to read the periodic table. Each group is given a numerical value, beginning with '1,' which is assigned to the left-most column on the periodic table.
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