Atomic mass unit 15-1-27Atomic mass unit - Wik ipedia, the free ency clopedia en.wik ipedia.org/wik i/Atomic_mass_unit 1/6 unified atomic mass unit or dalton Unit system Physical constant (Accepted for use with the SI)Unit of mass Symbol u or Da Named after John Dalton Unit ...
性质:符号为u,应称(统一的)原子质量单位[(unified)atomic mass unit]。我国正式规定这个术语中方括号内的三字省略而只称原子质量单位。它是我国法定计量单位之一。定义为:等于核素12C的一个中性原子处于基态时静止质量的1/12。通过实验测得1u=(1.6605402±0.0000010)×10-27千克。 说明:补充资料仅用于学习参考,请勿...
That year, a way to eliminate the confusion was found. It was suggested that carbon-12 be used as the basis of expressing AMU instead of oxygen or oxygen-16. The new unit was given the symbol u and Da. However, the symbol AMU didn't disappear, and scientists continued to use it even...
Physicists, desirous of greater precision, defined their atomic mass unit as 1/16th of the mass of the oxygen isotope 16 O. This made their atomic mass unit about 0.027% smaller than the chemical one. The symbol for both was amu (atomic mass unit). This was of course very confusing, ...
AMU, it roughly reflects the sum of the number of protons and neutrons in the atomic nucleus (electrons have so much less mass that they are assumed to have a negligible effect). The symbol for the unit is u (unified atomic mass unit) or Da (Dalton), although AMU may still be used....
. The number below the symbol is the atomic mass, which is the weight of the atom; this is the sum of the number of protons and neutrons. For example, hydrogen, the first element in the periodic table, has an atomic number of 1 and an atomic mass of 1.00794 atomic mass unit (amu)...
1 atomic mass unit is equal to A116 (mass of O2 molecules) B125 (mass of F2 molecules ) C112 (mass of one C-atom) D114 (mass of N2 molecules )Submit On atomic mass unit is equal to Amass of one atom of hydrogen Bmass of one atom of 6C12 C112 th of the mass of one atom ...
AtomicMassUnit As of Version 9.0, unit functionality is built into the Wolfram Language » AtomicMassUnit is a unit of mass.更多信息和选项 参见 Dalton Gram AvogadroConstant技术笔记 Units Package 相关指南Units Package 意见反馈顶部 程序员指南 入门书籍 Wolfram 函数知识库 | Wolfram 数据存储库 ...
atomic mass unit 美 英 un.原子质量单位;核质量单位 英汉 英英 un. 1. 原子质量单位 2. 核质量单位
atomic bomb,atomic clock,atomic energy,Atomic Energy Commission,atomic mass,atomic mass unit,atomic number,atomic physics,atomic power,atomic reactor, 英汉-汉英词典 n. 原质量单位 近义、反义、联想词 词 n. mass unit 用户正在搜索 fine-toothed,finetreatment,finetune,fine-tune,fineuniformity,finfish,...