Where does hydrogen ACTUALLY belong on the periodic table? (the answer may surprise you!)
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- čas přidán 14. 02. 2022
- Professor Davis explains the arguments for placing hydrogen in various places on the periodic table, then offers a solution that might give it a proper home.
Professor Davis' new Wondrium course on the Periodic Table is HERE!:www.wondrium.com/understandin...
Quam Review Article here: www.meta-synthesis.com/webboo...
I think it depends on what type of chemistry you're into - group 1 for physical chemistry because of its 1s1 electron configuration in the s block (but if you're gonna do that, then helium should be in group 2 because its electron configuration is 1s2 - it's an s block element too!), in group 17 for inorganic chemistry (like the halogens, hydrogen is a diatomic non-metal with one electron short of a closed shell, and it follows trends in melting and boiling point and colour going down the group), group 14 for organic chemistry (because it has a similar electronegativity to carbon, which explains why the C-H bond is very non-polar, which is a big concept in organic chemistry), and off on its own if you're printing a generic all-purpose periodic table for chemistry classrooms and posters!
All good points! Hydrogen really is quite the shapeshifter. It acts a lot like a metal under certain extreme conditions but a lot like a nonmetal under others. As for helium, the group to argument is much weaker but still can be made. I briefly mentioned the helium debate in my Wondrium.com course but not sure it is compelling enough for a its own CZcams video
3:57 wait a minute the periodic table has been around a hundred years the 1870s
thank you.
i always wonder if there is a lesser element than hydrogen.
I think what you miss in this video is all of this is merely an social concept and nature do not care on how we divide it up. So the question is if it was only one what social concept group would it fit best in. And due to our limitations of what fits in each group it can prefilled in more than one group. Other than that very good video.
Very cool Dr. Davis! 😉
Thanks a bunch, Mr. Wong!!! 😀
I never thought about it :o
Well let’s take a look at at the Fibonacci sequence and sacred geometry. The spiral elemental sheet is more accurate
This is why one is the loneliest number you’ll ever do
The periodic table is outdated..
We need to construct the real 3D model...!!!!!!
3D would be interesting, but what parameter do you use for the Third dimension? Right now it seems as though valence shell and atomic number are the most vital axes for an organization of the elements. The question of hydrogen can be solved in a number of ways even in two dimensions, and some have even proposed things like a 3D "tree" shape or three-dimensional spiral to try to accommodate certain shortcomings of the 2d versions. The main problem so far has been that most 3D proposals that fix certain problems with today's table tend to introduce new conflicts of their own. The truth of the matter is that atomic structure is far more complex than any table could fully capture! I'm not sure I would call the periodic table outdated so much as constantly evolving. There's no telling what it might look like in another decade or century.