Open AccessThe Periodic Table and Kinetics?
Author(s) -
Lothar Helm,
André E. Merbach
Publication year - 2019
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.2019.179
Subject(s) - monatomic gas , kinetics , residence , residence time (fluid dynamics) , ion , table (database) , valence (chemistry) , chemistry , aqueous solution , chemical physics , mineralogy , physics , geology , demography , organic chemistry , computer science , geotechnical engineering , quantum mechanics , sociology , data mining
Mendeleev in his first publication ordered the chemical elements following an apparent periodicity of properties such as atomic volume and valence. The reactivity of the elements was only studied systematically many years later. To illustrate the systematic variation of kinetics across the periodic table we compare water residence times for monoatomic ions in aqueous solution. A tremendous variation of ?H2O by over 20 orders of magnitude is found, ranging from ~10 ps to about 200 years. Apart from some small +2 and +3 cations, all main group elements have very short residence times