Meaning of ATOMIC NUMBER in English
- ATOMIC NUMBER
Number of a chemical element in the systematic, ordered sequence shown in the periodic table .
The elements are arranged in order of increasing number of protons in the nucleus of the atom (the same as the number of electrons in the neutral atom), and that number for each element is its atomic number.
Britannica Concise Encyclopedia. Краткая энциклопедия Британика. 2012