The University of Chicago Header Logo

Francium

"Francium" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

expand / collapse MeSH information
A radioactive alkali metal with the atomic symbol Fr, and atomic number 87. The mass numbers of known isotopes are 204-213, 217-224. Its valence is +1.


expand / collapse publications
This graph shows the total number of publications written about "Francium" by people in this website by year, and whether "Francium" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.
_