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.
The number of protons and neutrons in the nucleus.
the number of protons and neutrons in the nucleus of an atom.
The mass number is the sum of protons and neutrons in the atomic nucleus; is approx. equal to atomic weight.
The atomic number is the number of Protons The mass number is the number of Protons and Neutrons The number of Electrons always equals the number of Protons Therefore according to the above information the atomic number of the atom is 5 HOWEVER there is NO element with a mass number (atomic mass) of 9 with an atomic number of 5. You question is impossible to answer. Beryllium has an Atomic mass of 9.0122 and an Atomic number of 4 Boron has an Atomic mass of 10.811 and an Atomic number of 5
Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.
No need to add. Use the elemnts mass number, which is the number of protons plus the number of neutrons
Since a single atom is specified, the mass number of the particular isotope that the atom represents needs to be known. The quotient of the mass number and Avogadro's Number will give the approximate mass of the single atom in grams. (For the most accurate answer, the slight difference in mass between a proton and a neutron and the mass of the electrons in the atom will also need to be considered.)
The relative amount of mass an atom contributes to a molecule
<P>proton + neutrons give you a nucleon. the nuceon(or protons +neutron) give you the overall mass of the atom. the mass of electrons is not included, i dont even think that it has mass at all. Hope you're answered?</P>
Atomic mass is the average mass of all isotopes of a given element.
Number or Nuclear Particles
The mass number (similar to the Atomic Mass and not to be confused with atomic number) When the number of protons and neutrons is added the result will be its atomic mass or mass number.
Mass number..can be calculated..by the sum of No. of protons and the No. of electrons. And this would give you the the mass number of the element.
There is a mass of information available and the links below should give you all the information you need.
It gives the number of nucleons = protons + neutrons.
WikiAnswers does not give out personal information. A number is personal information.
the atomic mass and atomic number (number of protons) the number of neutrons is the mass minus the number
Mass number/Atomic Mass
The mass number = the number of protons + the number of nuetrons. Each of these particles is considered to have a mass of 1 amu. (atomic mass unit) For example, Aluminum has 13 protons and 14 nuetrons, so it's mass number = 27.
Neymar Jr does not give out his personal phone number to the general public.