Kalium

Also known as K, element 19, 19K

chemisches Element mit dem Symbol K und der Ordnungszahl 19

OverviewAI-generated

Potassium is a chemical element with the symbol K and atomic number 19. Its standard atomic mass is 39.0983. The element was discovered in 1807. It exhibits oxidation states of -1 and 1. The chemical formula is represented as K.

Physical properties include a melting point of 336.4 and a boiling point of 1038.7. The density is 0.862, and the standard molar entropy is 64.2. Electronegativity is measured at 0.82, with an ionic radius of 1.64. The electron configuration is [Ar] 4s¹. The Unicode character for potassium is 鉀.

Synthesized by Vinony from 30 facts across 4 sources: Wikidata, PubMed, PubChem, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula: K
Molecular weight: 39.0983 g/mol
IUPAC name: potassium
SMILES: [K]
InChIKey: ZLMJMSJWJFRBEC-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

306,002 papers

Physiology and pathophysiology of potassium homeostasis.Advances in physiology education · 2016
Potassium Intake, Bioavailability, Hypertension, and Glucose Control.Nutrients · 2016
Potassium: A Frontier in Osteoporosis.Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme · 2024
Potassium and the kidney.Nature reviews. Nephrology · 2026
Potassium.Advances in food and nutrition research · 2021

via PubMed

Wikidata facts

Subclass of: s-block
Part of: alkali metal
Named after: potash
Mass: 39.0983
Image: Kalium.jpg

Show 21 more facts

Commons gallery: Potassium
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
oxidation state: 1
element symbol: K
discoverer or inventor: Humphry Davy
Commons category: Potassium
topic's main category: Category:Potassium
atomic number: 19
time of discovery or invention: 1807-00-00
boiling point: 765.5
melting point: 63.2
density: 0.856
chemical formula: K
canonical SMILES: [K]
standard molar entropy: 64.2
electronegativity: 0.82
vapor pressure: 41.70
safety classification and labelling: Regulation (EC) No. 1272/2008
Unicode character: 鉀
electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
ionic radius: 1.64

Sources (10)

via Wikidata · CC0

Article · Deutsch

Kalium (lateinisch, aus arabisch القلية, DMG al-qalya ‚Pflanzenasche‘) ist ein chemisches Element mit dem Elementsymbol K (früher vereinzelt auch Ka) und der Ordnungszahl 19. Im Periodensystem steht es in der ersten Hauptgruppe bzw. der 1. IUPAC-Gruppe und zählt zu den Alkalimetallen. In der Erdhülle gehört Kalium zu den zehn häufigsten Elementen und kommt in zahlreichen Mineralen der Erdkruste vor.

Abstract from DBpedia / Wikipedia · CC BY-SA