chemical element
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Introduction
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
More general terms
More specific terms
- 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]