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What is the average of the mass numbers of an elements isotopes?
the Atomic Mass
Why is the atomic mass of an element an average?
The atomic mass is an average because most elements consist of a mixture of isotopes.
What element has an average atomic mass nearest to 79?
Selenium
What element has average atomic mass nearest to 31?
phosphorus
If you round the average atomic mass to the nearest whole number so whats neons atomic weight?
Go to this website www.periodictable/Elements/010/index.html
What element has an average atomic mass nearest to 62?
a dead elephant
Elements are ordered according to what?
average atomic mass number
Why do elements have a listed average atomic mass and not just atomic mass?
Because most naturally occurring elements are a mixture of isotopes, each having a different atomic mass. These individual isotopic atomic masses must be combined accounting for the amount of each isotope of the element is present to get a weighted average atomic mass.
What is the difference between the atomic number and average atomic mass?
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
Do the elements in a row on the periodic table have the same average atomic mass?
no.
How would the modern periodic table would be different if elements were arranged by average atomic mass instead of by atomic number?
how would the modern Periodic Table be different if elements were arranged by average Atomic Mass instead of by atomic number
What is the average mass of the mixture of an elements isotopes?
All of the isotopes in an element's atomic masses divided by the amount of isotopes there are is the weighted-average mass of the mixture of an elements isotopes.
