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.

MeSH information

Definition | Details | More General Concepts | Related Concepts | More Specific Concepts

Francium. A radioactive alkali metal with the atomic symbol Fr, atomic number 87, and atomic weight 223. The mass numbers of other known isotopes are 204-213, 217-222, and 224. Its valence is +1.

Descriptor ID	D005605
MeSH Number(s)	D01.268.271.380 D01.268.549.250 D01.268.556.277 D01.552.528.328 D01.552.544.277
Concept/Terms	Francium Francium

Below are MeSH descriptors whose meaning is more general than "Francium".

Chemicals and Drugs [D]
Inorganic Chemicals [D01]
Elements [D01.268]
Elements, Radioactive [D01.268.271]
Francium [D01.268.271.380]
Metals, Alkali [D01.268.549]
Francium [D01.268.549.250]
Metals, Heavy [D01.268.556]
Francium [D01.268.556.277]
Metals [D01.552]
Metals, Alkali [D01.552.528]
Francium [D01.552.528.328]
Metals, Heavy [D01.552.544]
Francium [D01.552.544.277]

Below are MeSH descriptors whose meaning is more specific than "Francium".

publications

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