Question

What's really inside a proton?

Answer 1

Answer:

One or more protons are present in the nucleus of every atom; they are a necessary part of the nucleus. ... Protons are composite particles composed of three valence quarks: two up quarks of charge + 23e and one down quark of charge − 13e. The rest masses of quarks contribute only about 1% of a proton's mass.

Composition: 2 up quarks (u), 1 down quark (d)

Magnetic moment: 1.41060679736(60)×10−26 J⋅T−1; 1.52103220230(46)×10−3 μB; ...

Answer 2

Answer:

Protons are composed of three valance quarks.

Explanation:

The two up Quarks of have charge of +23e and the remaining one have charge -13e.But, the rest mass of Quarks contribute only 1% of proton's mass.