Question

Properties of protons in an atom, [ Choose the incorrect statement ]

Number of atoms present are the atomic number of an element.

Mass of a proton is equal to the mass of an atom of hydrogen.

Proton were discovered as the stream of cathode ray.

Proton of isotopes are also having same numbers

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Answer 1

Answer:

I think . Number of atoms present are the atomic number of an element ..

Answer 2

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