What does atom mean? What is Atom?

<> figure represents the smallest unit of indivisible positive and negative electromagnetic information - qubits (qubits) by physicist John. John Wheeler famously said, "It from bit."

After the development of quantum information research, this concept was sublimated to the point that everything originates from qubits) Note: Bits are bits.

All matter in the world is made up of molecules, or directly composed of atoms, and atoms are composed of positively charged nuclei and negatively charged extranuclear electrons, the nucleus is composed of positively charged protons and uncharged neutrons, in the atom, the number of protons = the number of electrons, so positive and negative cancel, the atom is not electrically charged, the atom is a hollow sphere, most of the mass in the atom is concentrated in the nucleus, and the electron almost does not account for the mass, usually negligible.

Atom refers to the basic particles that are inseparable from a chemical reaction, and atoms are inseparable in a chemical reaction. An element is a general term for a class of atoms that have the same number of nuclear charges, i.e., the number of protons in the nucleus.

The simplest of all atoms is a hydrogen atom that contains only one electron, while a complex atom can contain hundreds of electrons. Electrons are distributed in the space around the nucleus like clouds (electron clouds) because they are distributed by chance, so the electron clouds have different shapes and directions of extension. A molecule is a combination of atoms.

Atoms are the smallest particles that make up matter. No, atoms can be divided into nuclei and extranuclear electrons, which in turn are composed of protons and neutrons, and the number of protons is the basis for distinguishing various different elements. Protons and neutrons can continue to be divided.

So atoms are not the smallest particles that make up matter, but atoms are the smallest particles in chemical reactions.

Atoms refer to the basic particles of chemical reactions, and atoms are inseparable in chemical reactions. The atomic diameter is on the order of 10 -10m. Atoms have very small masses and are concentrated in the nucleus.

Electrons are distributed outside the nucleus to produce a spectrum of electron transitions, which determine the chemical properties of an element and have a great influence on the magnetic properties of the atom. All atoms with the same number of protons make up elements, each with at least one unstable isotope, that can undergo radioactive decay. The atom was first an abstract concept with ontological significance in philosophy, and with the progress of human understanding, the atom gradually became a scientific theory from an abstract concept.