请输入您要查询的英文单词:

 

单词 atomic number
释义

WordReference Random House Learner's Dictionary of American English © 2024
aˈtom•ic ˈnum•ber, n. [countable]
  1. Chemistrythe number of protons in the nucleus of an atom of an element.

WordReference Random House Unabridged Dictionary of American English © 2024
atomic number, 
  1. Chemistrythe number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. Abbr.: at. no.;
    Symbol: Z Also called proton number. 
  • 1815–25

Collins Concise English Dictionary © HarperCollins Publishers::
atomic number n
  1. the number of protons in the nucleus of an atom of an element
    Abbreviation: at. no.

    Symbol: Z
随便看

 

英语词典包含188688条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/7/3 4:01:02