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Since most of the mass of an atom is contained in the protons and neutrons --and since these are in the nucleus --the mass of an atom is considered to be at its center. The electron has 1,000 times less mass than the proton, and it is moving pretty fast--so its mass is considered negligible. Values for average atomic masses can be found on any Periodic Table. The number comes from the number of protons + the average number of neutrons (as a percentage) in all isotopes.
The mass of an atom is primarily located within the nucleus, which contains protons and neutrons. Electrons, which orbit the nucleus, contribute very little to the overall mass of the atom due to their much smaller mass compared to protons and neutrons.
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How do you you find the mass number of an atom?
To find the mass number of an atom, you add together the number of protons and neutrons in the nucleus of the atom. The atomic mass listed in the periodic table is the weighted average of the mass numbers of all isotopes of that element.
What is used to find the mass of an atom?
The mass of an atom is obtained dividing the atomic weight of an isotope by the Avogadro number.
What is the difference in mass of Na ion and Na atom?
The difference in mass between a sodium atom and a sodium ion (supposing Na+) is 9.10938188 × 10-31kg (the mass of an electron). This is due to the sodium atom losing an electron to form an ion. In order to attain the mass of a single sodium atom you need to divide the molar massn (mass number) of sodium by avogadro's number. You can then find the mass of the ion by subtracting the mass of an electron from the mass of a sodium atom.
How do you find the mass of an atom?
the proper way is t eat ham
How do you find the number of nutrons in an atom?
To find the number of neutrons in an atom, subtract the atomic number (number of protons) from the atomic mass (rounded mass number). Neutrons are neutral particles found in the nucleus of an atom along with protons.
How do you you find the mass number of an atom?
To find the mass number of an atom, you add together the number of protons and neutrons in the nucleus of the atom. The atomic mass listed in the periodic table is the weighted average of the mass numbers of all isotopes of that element.
What is used to find the mass of an atom?
The mass of an atom is obtained dividing the atomic weight of an isotope by the Avogadro number.
What is the number of an atom with 5 protons and 7 neutrons?
To the find the mass number of an atom you add the protons and neutrons. Meaning that the mass number of this atom is 12.
What does the mass number of an atom help you find?
it helps you find where the nucleus is located
Why it is not possible to find the absolute mass of an atom?
It is the smallest particle
How many electrons does an atom has?
It depends on the atom you are reffering to, but to find the electrons take away the number of protons from the mass number of the atom.
What is the difference in mass of Na ion and Na atom?
The difference in mass between a sodium atom and a sodium ion (supposing Na+) is 9.10938188 × 10-31kg (the mass of an electron). This is due to the sodium atom losing an electron to form an ion. In order to attain the mass of a single sodium atom you need to divide the molar massn (mass number) of sodium by avogadro's number. You can then find the mass of the ion by subtracting the mass of an electron from the mass of a sodium atom.
How do you find the number of nutrons in an atom?
To find the number of neutrons in an atom, subtract the atomic number (number of protons) from the atomic mass (rounded mass number). Neutrons are neutral particles found in the nucleus of an atom along with protons.
How do you find out the mass of an atom?
By the addition of the number of protons and the number of electrons
How do you find the neutrons for an atom?
Neutrons = Mass number - Number of Protons
How do you find the mass of an atom?
the proper way is t eat ham
How do you find the mass and volume of a atom?
it depends on how many mulecules it contains ^_^
