The actinides and the lanthanides together form a group called the inner transition metals. Of these elements, only thorium (Th) and uranium (U) occur naturally on Earth in substantial amounts. The elements in this group have a silvery white color and tarnish on contact with air.Īctinides: The actinides line the bottom row of the island and comprise elements 89, actinium (Ac), through 103, lawrencium (Lr). This is the lanthanides, elements 57 through 71 - lanthanum (La) to lutetium (Lu). Lanthanides: The third group is much too long to fit into the third column, so it is broken out and flipped sideways to become the top row of the island that floats at the bottom of the table. Their chemical reactions typically occur more slowly and produce less heat compared to the alkali metals. But they're not as reactive as the alkali metals. Each of these elements has two electrons in its outermost energy level, which makes the alkaline earths reactive enough that they're rarely found alone in nature. Hydrogen, with its single electron, also lives in Group 1, but the gas is considered a nonmetal.Īlkaline-earth metals: The alkaline-earth metals make up Group 2 of the periodic table, from beryllium (Be) through radium (Ra). They are also extremely reactive and will burst into flame or even explode on contact with water, so chemists store them in oils or inert gases. Shiny and soft enough to cut with a knife, these metals start with lithium (Li) and end with francium (Fr). Gtsave(gt_final, filename = "periodic-table.The periodic table of elements is arranged into several broad groups (Image credit: Future) Groups of the Periodic tableĪlkali metals: The alkali metals make up most of Group 1, the table's first column. # change footnote symbol (can't choose specifically those used on Wikipedia) Locations = cells_column_labels(columns = "12") Locations = cells_column_labels(columns = "3")įootnote = "Some authors treat Zn, Cd and Hg as transition metals.", (b) The last two members of the group are known as transition metals.", Table_ = "#FFFFFF",Ĭolumn_ = "#FFFFFF"įootnote = "(a) Whether group 3 is composed of -La-Ac or -Lu-Lr is under review by the IUPAC. # remove borders for non-cells places by putting them in white as "style = NULL" doesn't work # create markdown instruction to make numbers and abbreviations on separate lines So here it is! Nothing complicated, a bit tedious to make, but a nice introduction to this package. For reference, this is the table I tried to replicate. I stumbled upon a periodic table of elements, and thought it would be a good exercise to reproduce it, as I am not familiar with the gt package. So I was thinking I would not participate to this, but I tried to search "tables stats" online to see if something inspired me. Contrarily to the Shiny contest, I didn't have any idea for this contest as I rarely see beautiful tables that I would like to reproduce, and I don't need to create particularly complicated tables in my work.
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