ATOMIC NUMBER

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does atomic number mean? 

• ATOMIC NUMBER (noun)
  The noun ATOMIC NUMBER has 1 sense:

1. 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

  Familiarity information: ATOMIC NUMBER used as a noun is very rare.

 Dictionary entry details 

• ATOMIC NUMBER (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)

 Context examples 

An element with atomic symbol I, atomic number 53, and atomic weight of 126.90.

(Iodine, NCI Thesaurus)

An element with atomic symbol Ir, atomic number 77, and atomic weight 192.217.

(Iridium, NCI Thesaurus)

An element with atomic symbol Fe, atomic number 26, and atomic weight 55.85.

(Iron, NCI Thesaurus)

A gaseous element with atomic symbol He, atomic number 2, and atomic weight 4.00.

(Helium, NCI Thesaurus)

An element with atomic symbol Au, atomic number 79, and atomic weight 197.

(Gold, NCI Thesaurus)

An element with atomic symbol Gd, atomic number 64, and atomic weight 157.25.

(Gadolinium, NCI Thesaurus)

An element with atomic symbol Ga, atomic number 31, and atomic weight 69.7.

(Gallium, NCI Thesaurus)

An element with atomic symbol Ge, atomic number 32, and atomic weight 72.64.

(Germanium, NCI Thesaurus)

An element with atomic symbol Pb, atomic number 82, and atomic weight 207.2.

(Lead Metal, NCI Thesaurus)

An element with atomic symbol Mo, atomic number 42, and atomic weight 95.94.

(Molybdenum, NCI Thesaurus)