in the nucleus of the atom
It is the nucleus. Mass of electrons is too small
in the nucleus of the atom
The mass of an atom is concentrated in the nucleus (protons+neutrons).
An atom's mass is concentrated in its nucleus, which is located in the center of the atom. Protons and neutrons within the nucleus are responsible for its mass; the electrons, which are located outside of the nucleus, don't contribute to the mass of the atom.
99.9% of the mass of an atom is located in the nucleus
virtually all the mass in concentrated in the nucleus of the atom, as the electron's mass is so small, it is negligible.
Most of the mass of an atom is concentrated in its nucleus, which is composed of protons and neutrons. Electrons, which have a very small mass compared to protons and neutrons, orbit around the nucleus.
in the nucleus
in the nucleus of the atom
The mass of an atom is concentrated in its nucleus, which is composed of protons and neutrons. The nucleus is extremely small compared to the overall size of the atom, but it contains almost all of the atom's mass. Electrons, which are much smaller in mass, orbit around the nucleus.
Most of an atom's mass is concentrated in the nucleus, which is made up of protons and neutrons. While electrons contribute to the atom's overall structure, their mass is negligible compared to that of the nucleus. Thus, the nucleus is responsible for nearly all of the atom's mass.
The concept of most of an atom's mass being concentrated in a small nucleus surrounded by the electrons is attributed to Ernest Rutherford through his gold foil experiment. Rutherford's experiment led to the development of the nuclear model of the atom.