What do you mean by net charge?

What do you mean by net charge?

 

The sum of the constituents. A neutron contains three quarks, whose charge adds to zero. The quarks each have charge.

The sum of the constituents. A neutron contains three quarks, whose charge adds to zero. The quarks each have charge.

 

 

The neutron are made of two down quarks and one up quark. The down quarks have a charge of charge -1/3 and the up quark has a charge of +2/3

 

The charge units are the units of an electrons charge which is defined as one.

 

As you know -1/3 + -1/3 + 2/3 is 0.

 

In an antineutron the antidown quarks have an electric charge of +1/3 and the up quark has a charge of -2/3.

 

Once more, equaling 0.

 

Certain quantum numbers are also opposite, but I don't know enough about those to give you a good explanation so just take it as it is