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the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
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∙ 8y ago
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How are the mass number and the atomic number of an elment different?
The atomic number denotes the number of protons in an atom where the mass number gives the sum of protons and neutrons.
What is the atomic mass of gadolinium?
The atomic mass of gadolinium is 157.25 (which is the measured mass based on the various isotopes which occur in nature).
What is Atomic Mass unit based on?
The mass of any isotope is based on the mass of an isotope of carbon, which is assigned a mass of 12.
The atomic mass of an element is based on the PLUS?
yes
Standard atomic mass is based on what element?
Carbon 12 isotope weighs exactly 12 atomic mass units thank you the other person who said it was B is a douche
The average atomic mass of boron is 10.81 amu. Based on the atomic mass of B-10 and the relative abundances of the boron isotopes what is the atomic mass of B-11?
B-10 is 10.013
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 did mendeleev's ordering actually correspond to?
Atomic mass. The modern table is based on atomic number.
The atomic mass unit is presently based on assigning an exact integral mass to an isotope of what?
carbon
The atomic mass of an atom is based on a comparison with the mass of sulfur-32?
it is compared to carbon-12
What does the atomic mass minus atomic number tell you about the element?
Atomic mass minus atomic number will give you the average number of neutrons in that element. Bear in mind that atomic mass is based on the actual weight of that element, which is the result of whatever isotopes appear in nature; it is rarely based on only a single isotope.
Is your modern periodic table based on atomic mass or atomic number?
The modern periodic table is arranged according to the elements' atomic numbers.
