Library / English Dictionary

ATOMIC NUMBER

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

The order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("atomic number" is a kind of...):

number (a concept of quantity involving zero and units)

Hyponyms (each of the following is a kind of "atomic number"):

magic number (the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126)

Credits

 Context examples: 

Oxygen atoms having the same atomic number (protons) but different mass numbers (and different numbers of neutrons).

(Oxygen isotopes, NOAA Paleoclimate Glossary)

An element with atomic symbol Pd, atomic number 46, and atomic weight 106.42.

(Palladium, NCI Thesaurus)

An element with atomic symbol Pt, atomic number 78, and atomic weight 195.09.

(Platinum, NCI Thesaurus)

An element with atomic symbol O, atomic number 8, and atomic weight 16.

(Oxygen, NCI Thesaurus)

An element with atomic symbol Os, atomic number 76, and atomic weight 190.23.

(Osmium, NCI Thesaurus)

An element with atomic symbol Ni, atomic number 28, and atomic weight 58.69.

(Nickel, NCI Thesaurus)

An element with atomic symbol N, atomic number 7, and atomic weight 14.01.

(Nitrogen, NCI Thesaurus)

An element with atomic symbol Er, atomic number 68, and atomic weight 167.259.

(Erbium, NCI Thesaurus)

An element with atomic symbol F, atomic number 9, and atomic weight 19.0.

(Fluorine, NCI Thesaurus)

AN element with atomic symbol Be, atomic number 4, and atomic weight 9.01

(Beryllium, NCI Thesaurus)