Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, …

2019年5月8日 · Clicking an element in the PubChem Periodic Table directs you to the corresponding Element page. This page presents a wide variety of element information, …

PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and …

Explore how atomic radius changes with atomic number in the periodic table of elements via interactive plots.

PERIODIC TABLE OF ELEMENTS

Periodic Table element Summary Lead Lead is a chemical element with symbol Pb and atomic number 82. Classified as a post-transition metal, Lead is a solid at 25°C (room temperature).

PERIODIC TABLE OF ELEMENTSChemical Group Block 18

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PERIODIC TABLE OF ELEMENTSElectronegativity 18

https://www.nist.gov/pml/database-disclaimer Barium https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=56 IUPAC Periodic Table of the Elements and Isotopes (IPTEI)