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Promethium

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Promethium

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Also known as Pm, element 61, ₆₁Pm

chemisches Element mit dem Symbol Pm und der Ordnungszahl 61

OverviewAI-generated

Promethium is a chemical element with the symbol Pm and atomic number 61. It has an oxidation state of 3 and an electronegativity of 1.13. The element was discovered in 1945. Its canonical SMILES representation is [Pm], and its chemical formula is Pm. The Unicode character for promethium is 鉕.

The substance has a molecular weight of 144.91276 and a charge of 0. It possesses an ionic radius of 1.09. According to PubChem data, promethium has zero hydrogen bond donors and acceptors, and a topological polar surface area of 0. Its InChIKey is VQMWBBYLQSCNPO-UHFFFAOYSA-N.

In academic literature, there are 186 PubMed entries associated with the query "promethium". The subject is referenced by 746 other encyclopedia articles. A Commons category and gallery for the element are also available.

Synthesized by Vinony from 23 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
Pm
Molecular weight
144.91276 g/mol
IUPAC name
promethium
SMILES
[Pm]
InChIKey
VQMWBBYLQSCNPO-UHFFFAOYSA-N
Polar surface area
0 Ų
H-bond donors
0
H-bond acceptors
0
Formal charge
0

via PubChem

Research

186 papers

via PubMed

Wikidata facts

Part of
period 6
Named after
Prometheus
Follows
neodymium
Image
Promethium-147 solution.jpg
Show 18 more facts
element symbol
Pm
Commons category
Promethium
topic's main category
Category:Promethium
atomic number
61
oxidation state
3
discoverer or inventor
Charles D. Coryell
location of discovery
Oak Ridge National Laboratory
time of discovery or invention
1945-01-01
Commons gallery
Promethium
described by source
Armenian Soviet Encyclopedia
canonical SMILES
[Pm]
has characteristic
radioactivity
chemical formula
Pm
on focus list of Wikimedia project
Wikipedia:Vital articles/Level/4
Unicode character
鉕
electronegativity
1.13
ionic radius
1.09
maintained by WikiProject
WikiProject Elements
Sources (5)

via Wikidata · CC0

Article · Deutsch

Promethium (von Prometheus, einem Titanen der griechischen Mythologie) ist ein chemisches Element mit dem Elementsymbol Pm und der Ordnungszahl 61. Im Periodensystem steht es in der Gruppe der Lanthanoide und zählt damit auch zu den Metallen der Seltenen Erden. Promethium wurde 1945 als Spaltprodukt des Urans entdeckt. Durch seine Entdeckung wurde die letzte Lücke im Periodensystem geschlossen. Alle Promethium-Isotope sind radioaktiv, das heißt, sämtliche Atomkerne, die 61 Protonen enthalten, sind instabil und zerfallen. Promethium und das leichtere Technetium (43) sind die einzigen Elemente mit kleinerer Ordnungszahl als Bismut (83), die diese Eigenschaft besitzen.

Abstract from DBpedia / Wikipedia · CC BY-SA

Gallery (17)