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How is the atomic weight of an element found?
you add the number of protons (the atomic number) to the number of neutrons
The atomic number is the same as the number of these two particles?
The "Atomic number" of an element corresponds to the number of only the protons in the nucleus of its atoms. Add to that the number of neutrons that are also in there, and you have the "Atomic weight".
What atomic number of f plus the atomic number of Na equals the atomic number of what element?
Calcium=Ca=Atomic number 20 9+11=20
What is the difference between an element's atomic mass an its atomic number?
atomic number = number of electrons atomic mass = number of protons and neutrons (electrons don't add nearly anything to mass so they're not counted. ps: number of electrons = number of protons in a regular atom
How do you get the mass number of an atom?
Look on the Periodic Table. The bottim number is the Atomic Mass and the top is the atomic number. ex. The atomic mass for O (oxygen) is 16.
How do you find the atomic mass and the atomic number?
The atomic number is the whole # on the periodic table or the # of protons in an atom. The atomic mass is the # that is not the whole # on the periodic table, or you can multiply the mass of the isotope by its abundance and add the answers together.
What is equal to the total number of protons and neutrons?
If you add the number of protons to the number of neutrons in an atom, you have calculated that atom's atomic mass.
How do you find the atomic mass number of an atom of an element?
add the number of protons and nuetrons together
Protons and neutrons in the nucleus add up to give the?
The number of protons added to the number of neutrons in a nucleus give that isotope's atomic weight.
How can you tell isotopes?
You can tell isotopes apart by the difference in there atomic mass numbers. Take for example the isotope Carbon-12. Carbon is the element name and 12 is the Atomic Mass of the element. The atomic mass number can (most?) always be changed, but the the atomic number ( the number above the Element symbol on the Periodic Table) cannot. Remember: The number of protons add by the number of neutrons equals the atomic mass number. The proton number = the atomic number, as of the number of electrons= the atomic number; hence the atomic number= number of proton = number of electron.
How can you calculate the number of neutrons N in an atom?
equal to number of protons
How do the number of protons change as atomic number increases by one?
the number of protons change because of the more protons you add on
