原子序数(英语:Atomic Number)是一个原子核质子个数量,因此也称质子数,也等于原子电中性时个核外电子数。拥有同一原子序个原子属于同一化学元素。原子序数个符号是Z。

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.