Periodic Table of Elements - PubChem
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, visualize trends, or even test your elements knowledge by playing a periodic table game!
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 3 Li Lithium Alkali Metal 2 4 Be Beryllium Alkaline Earth M … 2 5 B Boron Metalloid 13 6 C Carbon Nonmetal 14 7 N Nitrogen Nonmetal 15 8 O Oxygen Nonmetal 16 9 F Fluorine ...
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Atomic Mass | Periodic Table of Elements - PubChem
Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.
Hydrogen | H (Element) - PubChem
Some of the common ones are: water (H 2 O), ammonia (NH 3), methane (CH 4), table sugar (C 12 H 22 O 11), hydrogen peroxide (H 2 O 2) and hydrochloric acid (HCl). Hydrogen has three common isotopes. The simplest isotope, called protium, is just ordinary hydrogen.
Melting Point | Periodic Table of Elements - PubChem
Explore how melting point changes with atomic number in the periodic table of elements via interactive plots.
Selenium | Se (Element) - PubChem
Periodic Table element Summary Selenium. Selenium is a chemical element with symbol Se and atomic number 34. Classified as a nonmetal, Selenium is a solid at room temperature.
IUPAC Periodic Table of the Elements and Isotopes (IPTEI)
2023年3月16日 · The IUPAC (International Union of Pure and Applied Chemistry) Periodic Table of the Elements and Isotopes (IPTEI) was created to familiarize students, teachers, and non-professionals with the existence and importance of isotopes of the chemical elements.
Vanadium | V (Element) - PubChem
Periodic Table element Summary Vanadium. Vanadium is a chemical element with symbol V and atomic number 23. Classified as a transition metal, Vanadium is a solid at room temperature.
Beryllium | Be (Element) - PubChem
Periodic Table element Summary Beryllium. Beryllium is a chemical element with symbol Be and atomic number 4. Classified as an alkaline earth metal, Beryllium is a solid at room temperature.