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 ...
[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]
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 ...
The meaning of ATOMIC NUMBER is an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines t
美 英 un.原子量;原子质量;核质量 网络核聚变;原子的精确质量;原子重量 复数:atomic masses 权威英汉双解 英汉 英英 网络释义 atomic-mass — see also relative atomic mass
atomic weight,relative atomic mass mass- the property of a body that causes it to have weight in a gravitational field combining weight,eq,equivalent weight,equivalent- the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8...
atomic mass如何读 英:[əˈtɔmik mæs] 美:[əˈtɑmɪk mæs] atomic mass是什么意思 释义 原子质量; atomic mass英英释义 noun the mass of an atom usually expressed in atomic mass unitsalso: atomic weight noun the mass of an atom usually expressed in atomic mass units...
Atomic mass unit (AMU), in physics and chemistry, a unit for expressing masses of atoms, molecules, or subatomic particles. An atomic mass unit is equal to 1 12 the mass of a single atom of carbon-12, the most abundant isotope of carbon, or 1.660538921
While sulphur has usually been listed as havinganatomic massof32.065atomic massunits, its actualatomic masscanbe anywhere between 32.059 and 32.076, depending on the source of the element. chem.jingkung.com chem.jingkung.com 過往硫的原子質量會以 32.065 個原子質量單位表示,現在它實際的原子質量是視...
aThe masses of atoms and molecules are characterized by using quantities known as the relative atomic mass of an element (the atomic mass in short) and the relative molecular mass of a substance (the molecular mass ) 原子和分子大量描绘的是为使用数量以元素(原子质量的原子量简而言之)和物质的...