atomic number

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Definitions from WordNet

Noun atomic number has 1 sense

atomic number - 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
--₁ is a kind of number
--₁ has particulars: magic number

Definitions from the Web

Atomic Number

Definition:

Atomic number refers to the number of protons found in an atom's nucleus, determining its position in the periodic table and uniquely identifying the element.

Senses:

Sense 1:

(Noun) The numerical representation of an element's atomic number.

Example sentences:

The atomic number of hydrogen is 1.
Carbon's atomic number is 6.

Sense 2:

(Noun) The order in which elements are arranged in the periodic table according to their atomic numbers.

Example sentences:

Elements in the periodic table are sorted based on their atomic numbers.
The atomic number of an element determines its position in the periodic table.