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Hydrogen

"Hydrogen" 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.

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The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.


expand / collapse publications
This graph shows the total number of publications written about "Hydrogen" by people in this website by year, and whether "Hydrogen" was a major or minor topic of these publications.
Bar chart showing 11 publications over 11 distinct years, with a maximum of 1 publications in 1986 and 1991 and 1995 and 1999 and 2001 and 2003 and 2004 and 2009 and 2013 and 2014 and 2017
To see the data from this visualization as text, click here.