Question

Why neutron is fundamental particle even though it is charge less

Answer 1

It is called fundamental particle because it is indivisible and also it is no other particle in it and the charge isn't a factor which defines the meaning of a fundamental particle. New discoveries have shown that the electrons,protons and even neutrons are divisible as seen today as quarks and leptons.They were discovered in large particle accelerator in CERN by colliding particles at a astonishing speed equalent to 99% of speed of light but the theory was given in 2012 but still great efforts are made by the scientists to discover a even smaller particle smaller than quarks and leptons.
Differnt types of quarks are up,down,strange,charm,bottom,etc.I don't much about leptons but i'll be with its explanation and types very soon.
1 up quark has a charge of +2/3 while a down quark has a charge of -1/3.Therefore,
1 proton is made up of 1 down quark and 2 up quarks which add up to +1 thus a proton has a charge if +1.
A neutron is made up of 2 down quarks and 1 up quark which add up to 0 thus a neutron has a charge of 0.
Electrons are made up of leptons but I still don't know why can't three down quarks make a electron which can add up to -1 charge.
If you can get any ans. for my this electron question please let me know?
I hope this helped.
THANKS....