- a multivalent nonmetallic element of the nitrogen family members that develops commonly in inorganic phosphate stones so that as organic phosphates in all living cells; is very reactive and happens in several allotropic forms
- a multivalent nonmetallic part of the nitrogen family members that develops generally in inorganic phosphate rocks so when natural phosphates in all living cells; is extremely reactive and takes place in many allotropic types
Hypernym for "atomic number 15"
- chemical element
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