However an element's mass numbers can vary, which means that it can have different numbers of neutrons. So although chlorine has a mass number of 35 which means it has 18 neutrons, it can also ...

Since a nucleus contains protons and neutrons, most of the mass of an atom is concentrated in its nucleus.

What we regard as the nucleus of an atom is a beehive of even smaller particles called quarks struggling against a sticky exchange of gluons. Wherever two quarks of a flavor called 'up' are bound to a ...

An experiment more than 10 years in the making has delivered its first glimpse of the hurricane of particles whirring inside subatomic particles called neutrons ... of an atom is a beehive ...

In 1919 Rutherford had discovered the proton, a positively charged particle within the atom's nucleus ... He called it a neutron, and imagined it as a paired proton and electron.

When building an atom, pay close attention to the particles' electrical charges. Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral, as its name implies. A stable ...

Neutron stars, which were discovered 60 years ... Sun being compressed into a sphere the size of a large city but their structure has baffled experts for decades. From our morning news briefing ...

"Unlike previous bounds based on axion emission and energy loss, our approach is based on how the QCD axion field alters the neutron star's structure, compressing its envelope and accelerating ...