Each12C atom has six protons and six neutrons in its nucleus, adding up to an atomic mass of 12 AMU.Electronshave a low mass, so they are assumed to have a negligible effect. Consequently, the nucleus accounts for almost the entire mass of the atom of any element, which means that a ...
[translate] aThe atomic mass of an element indicates how heavy, on average, an atom of an element is when compared to an atom of another element 元素的原子质量表明多么重,平均,元素的原子是,当与另一个元素时原子比较[translate]
1 The relative atomic mass of an element is always D A the mass of an atom of the element relative to z the mass of a carbon-12 atom. B the mass of an atom of the element relative to the mass of a hydrogen atom.□ C the weighted mean mass of an atom of the element relative ...
15 The relative atomic mass of an element is determined using a mass spectrometer.(a)Define the term relative atomic mass.(2)Average/mean mass of an atom/ isotopes (1/ 12mass of an atom of) carbon-12(b)The mass spectrum of rubidium is shown below.8070一60-50-Relative40abundance30-20...
The atomic mass of an element is the average mass of all naturally occurring isotopes weighted by the abundance of each isotope. This is why the mass of each isotope is the number after the isotope's element name, such as the 12 in carbon-12, while the atomic mass of carbon is 12.011...
The atomic mass or atomic weight of an element (or put it in simple term, mass of an atom) is found by addingnumber of neutronsand number of protons. In calculating the atomic mass of an atom, the number of electrons and daltons are usually i...
Question: QUESTION 6 Identify how the atomic mass of an element is determined. average mass of all ions average mass of the isotopes that compose that element average mass of only the radioactive particles average mass of the electrons in that elem...
结果1 题目 2 The mass spectrum of an element is shown below.60Relative abundance40206971Mass/charge ratio The relative atomic mass of the element is B A 69.4 B 69.8 C 70.0□ D 70.2 相关知识点: 试题来源: 解析 B 反馈 收藏
The atomic number of an element M is 26. How many electrons are present in the M-shell of the element in itsM3+state View Solution An element has an atomic number 12. How may electrons will be present in the K, L and M energy shells of its atom ?
题目 5 The weighted average of the atomic masses of the naturally occuring isotopes of an element is the(1)atomic mass of the element(1) (2)atomic number of the element(3)mass number of each isotope(4)formula mass of each isotope 相关知识点: 试题来源: 解析 (1) 反馈 收藏 ...