Question

A new type of neutral particle whose mass is very nearly the same as that of a proton is called a:

Options

• Neutron

• Photon

• Neutrino

• Positron

Answer 1

Chadwick explained the neutral radiation from alpha-bombarded beryllium as a stream of neutral particles called neutrons. A neutron is defined as a neutral particle whose mass is very nearly the same as that of a proton, with \[m_n = 1.00866~\mathrm{u}\] versus \[m_p = 1.00727~\mathrm{u}\].