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: Atomic Mass and Isotopes Lesson Summary Frequently Asked Questions What is atomic mass in simple terms? Atomic mass takes all of the different forms of an element that exist on the planet and averages the mass of the elements. Each element tends to have several different forms...
atomic weight, ratio of the average mass of a chemical element’s atoms to some standard. Since 1961 the standard unit of atomic mass has been one-twelfth the mass of an atom of the isotope carbon-12. An isotope is one of two or more species of atoms of the same chemical element ...
ATOMIC WEIGHT VERSUS ATOMIC MASS.A letter to the editor is presented in response to the report "Atomic Weights of the Elements 2009," published in the December 20, 2010 issue.CarrollHarvey F.Chemical & Engineering News
Also, I thought atomic weight meant the sum of the number of protons and the number of neutrons but I found out that is called the mass number. So how do we find the number of neutrons from a periodic table? Can we simply subtract the atomic weight/atomic mass/ atomic relative mass by...
atomic mass,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 ...
Although the termsatomic weightandatomic massare used interchangeably, they have different meanings. Atomic weight implies a force exerted in a gravitational field, while mass doesn't. Specifically, the atomic weight of an element is the weighted average of the atomic masses of its different ...
Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes. The atomic weight can change because it depends on our understanding of how much of each isotope of an element exists. Both atomic mass and atomic weight relyon the atomic ...
Relative Isotopic Mass- This is the ratio of the mass of a single atom to the mass of a unified atomic mass unit. This is synonymous with atomic mass. Standard Atomic Weight- This is the expected atomic weight or relative atomic mass of an element sample in the Earth's crust and atmosph...