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, …

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

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

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

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

Relative atomic mass is the ratio of the average mass of the atom to the unified atomic mass unit (symbol: u) or dalton (symbol: Da), which is defined as one twelfth of the mass of a carbon-12 …

PERIODIC TABLE OF ELEMENTS Electronegativity 17 Atomic Number Cl Symbol Chlorine Name 3.16 Electronegativity (Pauling Scale) 1 H Hydrogen 2.2 1 1 2 He Helium 18

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

Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms.

Adults: Sudden deaths, stroke, and myocardial infarction have been reported in adults taking stimulant drugs at usual doses for ADHD. Although the role of stimulants in these adult cases …