Template:Selected anniversaries/December 22: Difference between revisions

From Gnomon Chronicles
Jump to navigation Jump to search
No edit summary
No edit summary
Line 26: Line 26:


||1828: William Hyde Wollaston dies ... chemist and physicist. Pic.
||1828: William Hyde Wollaston dies ... chemist and physicist. Pic.
||1838: Chemist Vladimir Markovnikov born. Markovnikov is best known for Markovnikov's rule, elucidated in 1869 to describe addition reactions of H-X to alkenes. According to this rule, the nucleophilic X- adds to the carbon atom with fewer hydrogen atoms, while the proton adds to the carbon atom with more hydrogen atoms bonded to it. Pic.


||1839: John Nevil Maskelyne born ... magician.
||1839: John Nevil Maskelyne born ... magician.

Revision as of 18:28, 28 March 2019