Maharashtra State PSC Model Paper 4

Question : 78 of 100

Marks: +1, -0

An electron possesses a negative charge of:

Solution:

Atoms are the smallest particle of the matter which is indivisible in nature i.e. cannot be further divided.
Atoms consist of three fundamental particles - 1. Proton 2. Neutron 3. Electron.
Proton and Neutron are present in the Nucleus of an Atom.
While Electron revolves in the orbit of an atom.
Proton discovered by E. Goldenstein and having Charge $(+1.6 × 10^{-19})$ and Mass $(1.67 × 10^{-27} {Kg})$
Electron discovered by Rutherford and having Charge $(-1.6 × 10^{-19})$ and Mass $(9.1 × 10^{-31} {Kg})$
Neutron discovered by James Chadwick and it is Neutral in nature i.e. zero charge or no charge and Mass $(1.67 × 10^{-27} {kg})$

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