Answer:
Quarks
Explanation:
Each neutron consists of one up quark and two down quarks.
An up quark has a charge of +⅔ and a mass of 4.01 × 10⁻³⁰ kg.
A down quark has a charge of -⅓ and a mass of 8.65 × 10⁻³⁰ kg.
