J. Chadwick identified another subatomic particle in __________________ that was virtually identical in mass to a proton and had no charge.

Another subatomic particle with no charge and a mass that was nearly identical to a proton was found by J. Chadwick in 1932.

• The subatomic particle discovered by Chadwick is a neutron, which has mass but does not carry any charge.
• It is indicated by the Symbol n or no.
• The subatomic particle is located in the nucleus of an atom.