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it isn't - the number of electrons in an atom will be the same as the proton number of that atom, but the mass of an atom includes the number of neutrons, and in every stable element heavier than hydrogen, the number of neutrons is the same as or greater than the number of protons. Also, the mass will vary between isotopes of the same element, which will contain the same number of protons and hence electrons but a different number of neutrons. Generally, in stable nuclei, as the number of electrons in an atom in creases, the mass increases as well, but these are not directly linked as to be stable, heavier nuclei require a greater proportion of neutrons in the nuclei so will have a greater mass to electron number ratio
The mass number represents the total number of protons and neutrons in an atom. Electrons have a very small mass compared to protons and neutrons, so they are usually not included in the mass number calculation. However, the mass of electrons does contribute slightly to the overall mass of an atom.
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How is isotopes related to number of electrons?
An isotope is not really related to the number of electrons, but rather it is determined by the number of neutrons.
How many electrons and What is the atomic mass and number in chlorine?
Chlorine has 17 electrons. Its atomic number is 17, and its atomic mass is approximately 35.5 atomic mass units.
Why do you calculate the number of electrons by the atomic mass and number?
You calculate the number of electrons by the atomic mass and number because elements have the same number of electrons as they do protons. The atomic number tells you the number of protons, which is also the number of electrons in a neutral atom. By using the atomic mass to find the number of neutrons, you can determine the overall charge and number of electrons in an atom.
Why is the mass of an atoms electrons not included in the atoms mass number?
Mass number is defined as the number of protons and neutrons. It is related to Atomic Mass which incudes electron mass and nuclear binding energy , (binding energy reduces the overall mass relative to the combined masses of the protons and neutrons.) Electron mass is not included as mass number is element specific wheras the count of electrons varies depending on the chemical state. The mass of electrons is negligible compared to the mass of the protons and neutrons, binding energy is a larger effect.
How can the number of proton neutron and electron be calculated to get atomic number and atomic mass?
atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number
How is mass related to electrons?
because the electrons plus the nuetrons equal the mass
How do you find the mass number without knowing the number of electrons?
The mass number doesn't depends on the number of electrons.
How can you determine the number of electrons in an atom?
You have to know the exact identity of the material to do this. First convert the mass of the material to the number of moles (see the Related Questions to the left for how to convert from mass to moles). Then determine the number of total electrons in the material using the periodic table and also see the Related Questions for how to count electrons. Then multiply the number of electrons times the number of moles and that times Avogadro's number (again, see the Related Questions). So you have: Step 1) Mass ÷ Molecular weight = Moles of material Step 2) Moles * # of electrons per molecule * Avogadro's number = total # of electrons
How is Neutrons and Electrons related to Mass?
Microwave
Why is the mass of an atom electrons not included in the atoms mass numbers?
Mass number is defined as the number of protons and neutrons. It is related to Atomic Mass which incudes electron mass and nuclear binding energy , (binding energy reduces the overall mass relative to the combined masses of the protons and neutrons.) Electron mass is not included as mass number is element specific wheras the count of electrons varies depending on the chemical state. The mass of electrons is negligible compared to the mass of the protons and neutrons, binding energy is a larger effect.
How do you tell the number of neutrons in an element?
Subtract the atom number from the mass number to get the neutron. Mass number is the sum of neutrons and electrons. Atom number is the number of electrons. the number of electrons is equivalent to the number of protons.
Does the mass number equal the same number of electrons?
The atomic mass number does not equal the number of electrons in the element. The atomic number, on the other hand, does usually equal the number of electrons in the element, With the exception of ions.
How is isotopes related to number of electrons?
An isotope is not really related to the number of electrons, but rather it is determined by the number of neutrons.
How do you find electrons?
you can find electrons by subtract the atomic number and atomic mass.
How many electrons and What is the atomic mass and number in chlorine?
Chlorine has 17 electrons. Its atomic number is 17, and its atomic mass is approximately 35.5 atomic mass units.
Why do you calculate the number of electrons by the atomic mass and number?
You calculate the number of electrons by the atomic mass and number because elements have the same number of electrons as they do protons. The atomic number tells you the number of protons, which is also the number of electrons in a neutral atom. By using the atomic mass to find the number of neutrons, you can determine the overall charge and number of electrons in an atom.
Why is the mass of an atoms electrons not included in the atoms mass number?
Mass number is defined as the number of protons and neutrons. It is related to Atomic Mass which incudes electron mass and nuclear binding energy , (binding energy reduces the overall mass relative to the combined masses of the protons and neutrons.) Electron mass is not included as mass number is element specific wheras the count of electrons varies depending on the chemical state. The mass of electrons is negligible compared to the mass of the protons and neutrons, binding energy is a larger effect.
