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Blei

Also known as Pb, element 82

giftiges chemisches Element mit dem Symbol Pb und der Ordnungszahl 82

OverviewAI-generated

Lead is a chemical element with the symbol Pb and atomic number 82. Its standard molar entropy is 64.8, and it has a mass of 207.2. The element has a density of 11.34 and an electronegativity of 2. Its ionic radius is 1.49. Lead melts at 621 and boils at 3164.

The substance is associated with the Commons category and gallery titled "Lead." It is referenced by 5,459 other encyclopedia articles. In medical contexts, the time-weighted average exposure limit is 0.05, and the level immediately dangerous to life or health is 100. The NIOSH Pocket Guide ID for lead is 0368.

Chemical identifiers include the formula Pb and the canonical SMILES string "[Pb]". The Unicode character for lead is "鉛". PubChem lists the compound weight as 207 and the IUPAC name as lead. It has zero hydrogen bond donors and acceptors, with a topological polar surface area of 0. PubMed records 962,367 entries for the query "lead."

Synthesized by Vinony from 30 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: Pb
Molecular weight: 207 g/mol
IUPAC name: lead
SMILES: [Pb]
InChIKey: WABPQHHGFIMREM-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

962,367 papers

Lead poisoning.ReviewAustralian family physician · 1993Campbell B
Lead poisoning.ReviewPediatrics in review · 2000Markowitz MDOI: 10.1542/pir.21-10-327
Sources of lead exposure in various countries.ReviewReviews on environmental health · 2019Obeng-Gyasi EDOI: 10.1515/reveh-2018-0037
Lead.ReviewClinics in laboratory medicine · 1990Gerson B
Lead-interacting proteins and their implication in lead poisoning.ReviewCritical reviews in toxicology · 2018de Souza ID, de Andrade AS, Dalmolin RJSDOI: 10.1080/10408444.2018.1429387
Perspectives on lead toxicity.ReviewClinical biochemistry · 1993Lockitch GDOI: 10.1016/0009-9120(93)90113-k
Lead poisoning: Clinical and laboratory considerations.Advances in clinical chemistry · 2023Bunch D, Pyle-Eilola ALDOI: 10.1016/bs.acc.2023.08.001
Biomarkers of lead exposure.ReviewIndustrial health · 2000Sakai TDOI: 10.2486/indhealth.38.127

via PubMed

Wikidata facts

Subclass of: post-transition metal
Part of: group 14
Material used: cerussite
Mass: 207.2
Image: Lead-2.jpg
Has use: nuclear reactor coolant

Show 27 more facts

melting point: 328
atomic number: 82
element symbol: Pb
Commons category: Lead
topic's main category: Category:Lead
NIOSH Pocket Guide ID: 0368
density: 11.34
has effect: lead poisoning
immediately dangerous to life or health: 100
Commons gallery: Lead
boiling point: 1740
vapor pressure: 0
time-weighted average exposure limit: 0.05
electronegativity: 2
standard molar entropy: 64.8
chemical formula: Pb
canonical SMILES: [Pb]
Unicode character: 鉛
different from: lead
found in taxon: Foeniculum vulgare
color: grey
has characteristic: opacity
ionic radius: 0.94
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
subject has role: carcinogen
associated hazard: lead poisoning
P8168: Jokkmokk Municipality

Sources (8)

via Wikidata · CC0

Article · Deutsch

Blei ist ein chemisches Element mit dem Elementsymbol Pb (lateinisch plumbum) und der Ordnungszahl 82. Es ist ein giftiges Schwermetall und steht in der 4. Hauptgruppe bzw. der 14. IUPAC-Gruppe (Kohlenstoffgruppe) und 6. Periode des Periodensystems. Blei ist leicht verformbar und hat einen vergleichsweise niedrigen Schmelzpunkt. Die Isotope 206Pb, 207Pb und 208Pb sind die schwersten stabilen Atome, Blei ist damit das Element mit der höchsten Massen- und Ordnungszahl, das noch stabil ist. Alle Bleiisotope haben die magische Protonenzahl 82, die diese Stabilität bewirkt. Bei 208Pb liegt sogar ein so genannter doppelt magischer Kern vor, weil er zusätzlich die magische Neutronenzahl 126 aufweist. Da die Bleiisotope -206, -207 und -208 die Endprodukte der drei natürlichen Zerfallsreihen radioaktiver Elemente sind, ist relativ viel Blei entstanden; es kommt deshalb in der Erdkruste im Vergleich zu anderen schweren Elementen (Quecksilber, Gold u. a.) häufig vor.

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