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Question
The lightest particle is/are :
The lightest particle is/are :
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Solution
The correct options are
A electron
D β-particle
The electron is the lightest particle of the atom. It has a mass of 9.1×10−28 grams. Comparing this mass to that of the proton's at 1.6726×10−24 grams, an electron is nearly 0.0005 times the proton's mass.
Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei. Hence, their mass will similar to that of the electron.
Hence, options A and D are correct.
A electron
D β-particle
The electron is the lightest particle of the atom. It has a mass of 9.1×10−28 grams. Comparing this mass to that of the proton's at 1.6726×10−24 grams, an electron is nearly 0.0005 times the proton's mass.
Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei. Hence, their mass will similar to that of the electron.
Hence, options A and D are correct.
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