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, …

As we mark the 150th anniversary of the periodic table, the scientific community has declared 2019 to be “The International Year of the Periodic Table”. PubChem is celebrating by …

PERIODIC TABLE OF ELEMENTS Chemical Group Block 17 Atomic Number Cl Symbol Chlorine Name Halogen Chemical Group Block 1 H Hydrogen Nonmetal 1 1 2 He Helium Noble Gas 18 …

PERIODIC TABLE OF ELEMENTS Electron Configuration 17 Atomic Number Cl Symbol Chlorine Name [Ne]3s 2 3p 5 Electron Configuration 1 H Hydrogen 1s 1 1 1 2 He Helium 1s …

Chemical element, Beryllium, information from authoritative sources. Look up properties, history, uses, and more.

Periodic Table element Summary Oganesson. Oganesson is a chemical element with symbol Og and atomic number 118. Classified as a noble gas, Oganesson is a expected to be a gas at …

Periodic Table element Summary Hydrogen. Hydrogen is a chemical element with symbol H and atomic number 1. Classified as a nonmetal, Hydrogen is a gas at room temperature.

Chemical element, Silver, information from authoritative sources. Look up properties, history, uses, and more.

Periodic Table element Summary Ytterbium. Ytterbium is a chemical element with symbol Yb and atomic number 70. Classified as a lanthanide, Ytterbium is a solid at room temperature.

Chemical element, Gold, information from authoritative sources. Look up properties, history, uses, and more.