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chemical element
Also see periodic table.
92 naturally occurring elements
- astatine is the rarest naturally occuring element
- osmium is the heavy element
- hydrogen is the lightest element
elemental ingredients in the human body
- oxygen 65.0%
- carbon 18.5%
- hydrogen 9.5%
- nitrogen 3.3%
- calcium 1.5%
- phosphorus 1.0%
- potassium 0.4%
- sulfur 0.3%
- chlorine 0.2%
- sodium 0.2%
- magnesium 0.1%
- iodine (in thyroxin T3, T4) *
- iron (in hemoglobin)
- zinc (in carbonic anhydrase)
- cobalt (in Vitamin B12)
- manganese (in SOD)
- chromium (in picolinate)
- selenium
- boron
- nickel
- vanadium
- tin
- silicon
- molybdenum
- copper
- fluorine (fluoride from municipal water supply)
- lithium (contaminant of water well & used for Rx of bipolar bisorder)
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* Only trace amounts of elements below (< 0.1 percent)
some mineral elements are essential; the value of others in human nutrition has not been established.
Toxic Elements (many are fatal if inhaled or ingested)
- plutonium (most toxic element)
- uranium (next most toxic element)
- radium (carcinogen)
- polonium
- arsenic
- gold
- silver
- platinum
- lead (see lead poisoning)
- aluminum
- tungsten
- radon
- mercury
- gallium
- germanium
- cadmium
- selenium
Related
nutritional (essential) mineral
periodic table
Specific
actinide
alkali metal
alkaline earth metal
aluminum [Al]
antimony [Sb]
arsenic [As]
bismuth [Bi]
cadmium [Cd]
carbon [C]
gallium [Ga]
germanium [Ge]
gold [Au]
hafnium [Hf, celtium]
halogen
hydrogen [H]
indium [In]
inert gas (noble gas, rare gas)
iridium [Ir]
lanthanide (rare earth metal)
lead [Pb]
mercury [Hg]
nickel [Ni]
niobium [Nb, columbium]
nitrogen (elemental) [N]
osmium [Os]
oxygen (elemental) [O]
palladium [Pd] (amazing soaking sponge)
phosphorus [P]
platinum [Pt]
radioactive element
rhenium [Re]
rhodium [Rh]
ruthenium [Ru]
scandium [Sc]
silver [Ag]
sulfur [S]
tantalum [Ta]
tellurium [Te]
thallium [Tl]
tin [Sn]
titanium [Ti]
trace element
transactinide
yttrium [Y]
zirconium [Zr]
General
chemical substance
References
- Chemical & Engineering News, Sept 8, 2003
- Discover Magazine, p. 11 (September 2013).