Fill in the blanks with suitable words: The particle of an atom that has no charge is ________.
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Solution
The proton is positively charged, electron is negatively charged and neutron has no charge.
James Chadwick in 1932 bombarded a thin foil of beryllium with fast-moving alpha particles and observed that highly penetrating rays consisting of neutral particles were formed. These neutral particles were found to have a mass which is equal to that of a hydrogen atom. Neutrons are present in the nucleus.