CHNOPS

Graphic representation of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur

CHNOPS and CHON are mnemonic acronyms for the most common elements in living organisms. "CHON" stands for carbon, hydrogen, oxygen, and nitrogen, which together make up more than 95 percent of the mass of biological systems.[1] "CHNOPS" adds phosphorus and sulfur.

  1. ^ Cite error: The named reference A&L20090927 was invoked but never defined (see the help page).

Developed by StudentB