A particle that has no charge, has a mass of 1 AMU and is located in the nucleus is a:

A. Proton.

B. Neutron.

C. Electron.

D. Quark.

Answer: B

Explanation:

Proton and Neutron are located in the nucleus of an atom. Electron evolves around or outside the nucleus.

Proton is positively charged while neutron has no charge with mass of 1 amu. Electron is negatively charged.

therefore, the particle with no charge and located in the nucleus is Neutron.