atomic number

From Wiktionary
Wikipedia logo
Wikipedia logo
The Simple English Wikipedia has an article on:

Pronunciation[change]

  • IPA (key): /əˈtɒm.ɪk//ˈnʌm.bɚ/

Noun[change]

Singular
atomic number

Plural
atomic numbers

  1. (countable) The number of protons in an atom is the atomic number. It is also the position in the periodic table of elements.
    Hydrogen has an atomic number of 1. It has 1 proton, and is the first element in the periodic table.
    Heavy elements, such as gold have a high atomic number.

Related words[change]