Depends on the application
The mass of an atom is primarily determined by the combined masses of its protons, neutrons, and electrons. Protons and neutrons contribute most of the mass since electrons have negligible mass. The exact mass of an atom can be found by adding up the masses of its protons, neutrons, and electrons.
The mass number represents the total number of protons and neutrons in an atom's nucleus. Electrons, which are negatively charged particles, have negligible mass compared to protons and neutrons. Therefore, adding or removing electrons does not significantly affect the mass number of an atom.
Physics has not managed to discover a particle that accounts for mass
The protons and neutrons contribute the most to the mass of potassium. Protons have a positive charge and determine the element's identity, while neutrons provide additional mass without affecting the charge. Electrons have negligible mass compared to protons and neutrons.
The particles are protons, neutrons, and the nucleus inside of the atom Nice helping u >_<
Because the mass of electron is negligible when compared to the mass of protons or neutrons.
mass of protons + mass of neutrons present in the element (as the mass of electrons is practically negligible)
The mass of an atom is determined by the combined mass of its protons, neutrons, and electrons. Protons and neutrons are the primary contributors to the mass, while electrons have a negligible mass in comparison.
There are a number of particles of particularly low mass. Electrons have much less mass than either protons or neutrons, and so are negligible in calculating the mass of an atom. However, electrons are still much heavier than neutrinos or photons, which are even more negligible in mass.
when compared to the mass of protons and neutrons, the mass of the electrons is negligible and hence not included in atomic mass.
The weight of an electron is negligible compared to that of protons and neutrons.
The major contribution to the mass of an atom is from protons and neutrons; electrons have a known but negligible mass.
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. Protons have a positive charge and neutrons have no charge, contributing to the overall mass of the atom. The number of electrons, which have a negligible mass, is not included in the atomic mass.
The atomic mass number represents the total number of protons and neutrons in an atom's nucleus. It does not include the electrons because their mass is negligible compared to protons and neutrons.
The mass of an atom is primarily determined by the combined masses of its protons, neutrons, and electrons. Protons and neutrons contribute most of the mass since electrons have negligible mass. The exact mass of an atom can be found by adding up the masses of its protons, neutrons, and electrons.
The mass of an atom is concentrated within its nucleus, which contains protons and neutrons. The electrons, which have negligible mass compared to protons and neutrons, orbit around the nucleus in specific energy levels.
The atomic mass of an element is determined by the number of protons and neutrons in its nucleus. Protons and neutrons have almost the same mass and contribute to the overall mass of the atom. Electrons, on the other hand, have negligible mass compared to protons and neutrons and do not significantly affect the atomic mass.