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To what number does the atomic mass refer?
After the IUPAC rules, atomic mass is an expression used only for the mass of isotopes (in atomic mass units).
Standard for the atomic mass number?
An atom of carbon-12 has a mass of exactly 12 atomic mass units. This is now the standard.
What element is used to find the atomic mass of all the elements?
Atomic mass of an element is calculated based on the mass of it's protons and neutrons. This is why we get isotopes. But I think you are talking about Carbon; the periodic table is based on 12.
What is the atomic mass of Darmstadtium?
The standard atomic weight of darmstadtium is considered 281.
The atomic mass is the?
The expression atomic mass is used only for isotopes; the atomic mass is the mass of an atom expressed in unified atomic mass units - (1 amu = 1/12 atomic mass of carbon-12).For elements the expression is atomic weight; the unit is the same.
What two pieces of information can be determined from the atomic mass?
The number of protons and neutrons in the atom can be determined from the atomic mass. The atomic mass represents the average mass of the isotopes of that element in atomic mass units.
Where does the atomic mass of chlorine come from?
The atomic mass of chlorine is calculated based on the average mass of all the naturally occurring isotopes of chlorine and their relative abundance in nature. Isotopes are atoms of the same element with different numbers of neutrons in their nucleus, which affects their atomic mass. The average atomic mass of chlorine is approximately 35.45 atomic mass units.
What is the same in isotopes?
isotopes always have the same? mass # & atomic #, or atomic # and atomic weight, or atomic # but different mass #'s
Is the atomic mass of hydrogen 3?
The atomic mass of the most common form of hydrogen is 1. There are isotopes of hydrogen with a mass of 2 (deuterium) and 3 (tritium), but they are rare.
What is the defined atomic mass in amu of this isotope?
The atomic mass of an isotope is the weighted average mass of all the isotopes of that element based on their natural abundance. It is expressed in atomic mass units (amu).
Which best describes the definition for the atomic mass of an element?
The atomic mass of an element is the average mass of an element's isotopes, weighted by their natural abundance. It is expressed in atomic mass units (u) and is often close to the mass number of the most abundant isotope of the element.
What relationship exist between the atomic mass and the isotopes?
When atomic mass is expressed in unified atomic mass units, it is similar to isotopic mass and has the same numerical value as that of atomic mass. The atomic mass or the relative isotopic mass is the mass of one atom which at a time can be only one isotope.
