Atomic Mass (Atomic Weight)doi:10.1002/0471740039.vec0302atomic massFirst page of article Keywords: atomic massJohn Wiley & Sons, Inc.Van Nostrand's Encyclopedia of Chemistry
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 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 ...
THE first mass-speetra obtained from caesium by means of a hot anode showed only one line of mass number 133. As I pointed out,the conditions of the experiment precluded any accuracy of measurement sufficient to decide whether the chemical atomic weight then and since accepted, 132.81, did ...
Atomic mass, the quantity of matter contained in an atom of an element. It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, which is assigned an atomic mass of 12 units. In this scale, 1 atomic mass unit (amu) corresponds to 1.66
atomic weightatomic 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...
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 ...
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. ...
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...