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

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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)

More general terms

More specific terms

Additional terms

References

  1. Chemical & Engineering News, Sept 8, 2003
  2. Discover Magazine, p. 11 (September 2013).