However an element's mass number close mass number The total number of protons and neutrons found in the nucleus of an atom. can vary, which means that it can have different numbers of neutrons ...

The nucleus close nucleus The central part of an atom. It contains protons and neutrons, and has most of the mass of the atom. The plural of nucleus is nuclei. is tiny compared to the overall size ...

First, let's explore the atom's architecture. Formed from a cluster of protons and neutrons at the center of an atom, a nucleus is 10,000 times smaller than the atom as a whole, "like a fly in a ...

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

Together with results by some nuclear mass models (denoted by pink block), calculations suggest that the isospin asymmetry of heavy nuclei at the neutron drip line tends toward a saturation value ...

While gluons are responsible for generating most of the visible mass in the universe, their role inside nuclei remains poorly ...

The study is part of Kokkonen's doctoral thesis and a direct scientific follow-up to her master's thesis, in which she discovered a new type of atomic nucleus, the 190-astatine. The thesis article ...

The invisible dark matter is one of the universe's biggest mysteries, and its existence is confirmed only by the ...