The sum of masses of protons, neutrons and electrons.
The mass number of an atom is determined by counting the total number of protons and neutrons in its nucleus. Electrons, which are much lighter than protons and neutrons, are not included in the mass number calculation.
No, mass number is the number of neutrons and protons that exist within the nucleus of the atom for a particular element. It is based on the idea that most of the mass of an atom derives from the nucleus.
The atomic mass is the can be determined by the number of protons in an atom. Remember that a proton has an atomic mas number of 1 AMU (atomic mass unit). (The total mass of an atom is the protons, neutrons and electrons combined.)
Sulphur is a non metallic element. Mass number of it is 32.
No, the mass number of an element represents the total number of protons and neutrons in the nucleus, but it does not provide information about the number of electrons. The number of electrons in a neutral atom is equal to the number of protons in the nucleus.
The atomic mass is mainly determined by the total number of protons AND neutrons.
By the size of the atom and its mass
Mass of an atom = mass of protons + mass of neutrons
By the atomic mass
neutrons in an atom's nucleus. It is measured in atomic mass units (amu) and provides the total mass of an atom. The atomic mass is approximately equal to the sum of the protons and neutrons in the nucleus, as the mass of electrons is negligible.
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
Essentially an atom's mass is determined by its number of protons and neutrons, as mass of electrons is so minuscule relative the nucleus.
Atomic mass.
The mass of an atom is determined by the sum of the masses of its protons, neutrons, and electrons. The protons and neutrons are located in the nucleus and contribute most of the mass, while the electrons, which have much less mass, orbit the nucleus. The mass of an atom is typically measured in atomic mass units (amu).
The mass of electrons is negligible compared to the mass of protons and neutrons in an atom. Therefore, the collective mass of 16 microcoulombs and 100000000000000 electrons would be determined mainly by the mass of the protons and neutrons in the atoms involved in the charge.
Atomic Mass is the number of protons in an atom plus the number of neutrons in the same atom.
The atomic weight of chemical elements is determined by mass spectrometry.