The neutron is a subatomic particle with a mass of m[sub]e[/ sub]=(1.6749286 & #177; 0.0000010) 10[sup]-27[/ sup] kg which occurs in the nucleus of an atom.
Neutron on aatomiosake massiga m[ sub] e [/ sub] =( 1, 6749286 & # 177; 0, 0000010) 10[ sup] - 27 [/ sup] kg, mis esineb aatomi tuumas.