atomic number 15
ato·mic·num·ber
noun
1.
a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
Related words
Broader terms
Parts
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.