The heaviest particle among the following is:

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(B) The mass of a $Neutron$ is approximately $1.675 	imes 10^{-27} \ kg$. The mass of a $Proton$ is approximately $1.673 	imes 10^{-27} \ kg$. The m

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Neutron

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(B) The mass of a $Neutron$ is approximately $1.675 	imes 10^{-27} \ kg$. The mass of a $Proton$ is approximately $1.673 	imes 10^{-27} \ kg$. The mass of an $Electron$ is approximately $9.109 	imes 10^{-31} \ kg$. $Mesons$ have variable masses,but generally,the $Neutron$ is considered the heaviest among the fundamental subatomic particles listed. Therefore,the correct option is $(B)$.

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