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___________ is the lightest and smallest particles that’s obtained from hydrogen(that is a positive ion).

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in Chemistry – Class 11 by (148k points)
___________ is the lightest and smallest particles that’s obtained from hydrogen(that is a positive ion).

(a) Electron

(b) Proton

(c) Neutron

(d) Particle

I had been asked this question in exam.

This interesting question is from Discovery of Sub-atomic Particles in division Structure of Atom of Chemistry – Class 11

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The correct option is (b) Proton

For explanation I would say: In 1911, Rutherford discovered protons by performing experiments and also found out that positive charge is concentrated at centre and that it has most of the atomic mass. The name proton was first time given in the year 1920.

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