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 …

Periodic Table Scandium Scandium is a chemical element with symbol Sc and atomic number 21. Classified as a transition metal, Scandium is a solid at 25°C (room temperature).

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).

9.2 Isotopes in Forensic Science and Anthropology Different geographic regions may have characteristic terrestrial lead isotopic compositions because of variations in the ages and chemical composition of …

7.1 Isotopes in Forensic Science and Anthropology Radiogenic xenon isotopes are produced by nuclear reactions in atomic bombs and nuclear reactors. For example, 131 Xe, 133 Xe, and 135 Xe are some …

Periodic Table Magnesium Magnesium is a chemical element with symbol Mg and atomic number 12. Classified as a n alkaline earth metal, Magnesium is a solid at 25°C (room temperature).

It has the highest equivalent weight of any element, and is the most unstable of the first 101 elements of the periodic system. Thirty-three isotopes of francium are recognized.

Resources on Isotopes-Periodic Table-Aluminum, United States Geological Survey (2014), Feb. 24; http://wwwrcamnl.wr.usgs.gov/isoig/period/al_iig.html. [120] D. E. Granger. Geol. Soc. Spec. …

9.1 Isotopes in Earth / Planetary Science Because molecules, atoms, and ions of the stable isotopes of silicon possess slightly different physical and chemical properties, they commonly will be fractionated …

[285] United States Geological Survey. Resources on Isotopes-Periodic Table-Krypton, U.S. Geological Survey (2014), Feb. 26; http://wwwrcamnl.wr.usgs.gov/isoig/period/kr_iig.html.