Editing Talk:2214: Chemistry Nobel

Jump to: navigation, search
Ambox notice.png Please sign your posts with ~~~~

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision Your text
Line 19: Line 19:
  
 
Did Mendeleev really design his table to represent the way electrons are arranged in atoms? In 1869, he must have been quite a visionary! Zetfr 09:23, 13 October 2019 (UTC)
 
Did Mendeleev really design his table to represent the way electrons are arranged in atoms? In 1869, he must have been quite a visionary! Zetfr 09:23, 13 October 2019 (UTC)
βˆ’
:Oh no, he didn't. He did by patterns of their properties. Also by atomic weights, but those were imprecisely known then, also note the isotope paradox problem (e.g. K and Ar must be swapped). The first sorting already guarantess to represent the electronic arrangement to some degree. BTW, lanthanides and actinides need more love. For starters, I PhD'ed on them.
+
:Oh no, he didn't. He did by patterns of their properties. Also by atomic weights, but those were imprecisely known then, also note the isotope paradox problem (e.g. K and Ar must be swapped). The first sorting already guarantess to represent the electronic arrangement to some degree. BTW, lanthanides and actinides need more love. For starters, I PhD'ed on them. [[Special:Contributions/172.69.55.22|172.69.55.22]] 15:20, 13 October 2019 (UTC)
βˆ’
::Actually he was quite the visionary, considering what they didn't know back then. While everybody else was arranging their tables (and there were plenty of them) entirely by atomic weight, he arranged them by both atomic weight on the large scale and chemical valence on the small scale. This clued him in to the changing periods and also enabled him to correct elements out of order by weight. The noble gases hadn't been discovered yet, but when they were, they fit right in as they had a valence of zero. A few decades later [[wikipedia:Henry Mosely|Henry Mosely]] used proton bombardment and X-Ray radiation measurement to determine the electrostatic properties of various elements and found a simple progression that both absolutely vindicated Mendeleev and introduced the concept of [[wikipedia:Atomic Number|Atomic Number]]. He should have gotten a Nobel prize, but sadly, no prizes were awarded that year because of the war and Mosely himself was killed at the young age of 27 by a bullet with his name on it. Sigh.
 
βˆ’
[[Special:Contributions/172.69.55.22|172.69.55.22]] 15:20, 13 October 2019 (UTC)
 
  
 
Clearly these new elements are fractional elements, with elements having - for instance - 1 3/16 protons, etc. [[Special:Contributions/108.162.241.248|108.162.241.248]] 21:20, 13 October 2019 (UTC)
 
Clearly these new elements are fractional elements, with elements having - for instance - 1 3/16 protons, etc. [[Special:Contributions/108.162.241.248|108.162.241.248]] 21:20, 13 October 2019 (UTC)

Please note that all contributions to explain xkcd may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see explain xkcd:Copyrights for details). Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following CAPTCHA:

Cancel | Editing help (opens in new window)