Question

__________ is a fundamental particle of an atom having mass almost equal to hydrogen atom.

Answer 1

Atom

• Atom is the building block of matter.
• Atom constitutes matter.
• Atoms are made up of 3 subatomic particles i.e Protons, Electrons, and Neutrons.
• Protons and neutrons are present in the nucleus of an atom.
• Nucleus (protons+ neutrons) constitute the mass of the atom.

Similarities between a Hydrogen atom and proton

• In the case of Hydrogen (H₂), neutrons are absent, and mass is due to proton alone.
• Mass of Proton = $1.67\times {10}^{-27}kg$

Hence, Proton is a fundamental particle of an atom having a mass almost equal to a Hydrogen atom.