Promethium
id:
promethium-163-18955542
title:
Promethium
text:
Promethium is a chemical element with symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600 grams naturally occurring in the Earth's crust at any given time. Promethium is one of the only two radioactive elements that are followed in the periodic table by elements with stable forms, the other being technetium. Chemically, promethium is a lanthanide. Promethium shows only one stable oxidation state of +3. In 1902 Bohuslav Brauner sugges
brand slug:
wiki
category slug:
encyclopedia
description:
Chemical element with atomic number 61 (Pm)
original url:
https://en.wikipedia.org/wiki/Promethium
date created:
2001-05-17T14:24:09Z
date modified:
2024-08-28T16:03:00Z
main entity:
{"identifier":"Q1809","url":"https://www.wikidata.org/entity/Q1809"}
image:
fields total:
13
integrity:
15