1.6749 x 10^-27 Kg - The Weight Of A Neutron

Fact of the day: 1.6749 x 10^-27 Kg  - the weight of neutron.

(above) The composition of a neutron.

There are two types of hadron particles: baryons and mesons. Hadrons are particles that are made up of quarks.

Baryons are particles that are made up of three quarks, such as protons and neutrons (there are other types but the other types are extremely rare).
A proton is a positively charged particle, made up of two up quarks and a down quark.
A neutron is a neutral particle (it has no electric charge) and is made up of one up quark and two down quarks.
The proton and the neutron are the particles that make up an atomic nucleus.

Mesons are particles that are made up of one quark and one antiquark. These particles are very unstable, and they only last for only hundredths of a microsecond. An example of a meson in a pion, which is described in my post 'There Are Six Types Of Quark'.

There are also antiquarks, which make up antimatter (along with anti leptons), like the antiproton.

All of these particles are bound together by the strong nuclear force.


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