Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Which of the following options represents sub-atomic particles found in Thomson's model of an atom?
Only electrons
Protons and neutrons both
Only protons
Electrons and protons both
Only electrons
According to J.J. Thomson's model of an atom (often known as the 'plum pudding' or 'watermelon' model), an atom consists of a positively charged sphere in which negatively charged electrons are embedded to make the atom electrically neutral. Therefore, the sub-atomic particles found in Thomson's model are electrons.
According to J.J. Thomson's model of an atom (often known as the 'plum pudding' or 'watermelon' model), an atom consists of a positively charged sphere in which negatively charged electrons are embedded to make the atom electrically neutral. Therefore, the sub-atomic particles found in Thomson's model are electrons.
Think of a watermelon where the red juicy edible part represents the positive sphere and the black seeds embedded inside represent the electrons.
Thomson's Plum Pudding: Pudding is Positive, Plums (electrons) are negative.
J.J. Thomson proposed that the atom is a sphere of positive charge with a magnitude equal to the total negative charge of the electrons embedded within it. This maintains overall electrostatic neutrality. Protons and neutrons were not part of this model as the neutron was discovered much later by James Chadwick (1932) and the nucleus was discovered by Ernest Rutherford (1911).
J.J. Thomson proposed his atomic model in 1898.
It is also known as the plum pudding, raisin pudding, or watermelon model.
The atom is considered electrically neutral because the total positive charge equals the total negative charge.
This model failed to explain the results of Rutherford's ╬▒-particle scattering experiment.
Successfully explained the overall electrical neutrality of an atom.
Could not explain the scattering of ╬▒-particles observed in Rutherford's experiment.
Failed to provide any experimental evidence for the stability of the atom.
Historical milestone in understanding atomic structure and sub-atomic particles (discovery of electrons).
Electron was discovered by J.J. Thomson in 1897 using cathode ray tubes.
Proton was named by Ernest Rutherford, and Neutron was discovered by James Chadwick in 1932.
A is correct тАФ Only electrons are present in Thomson's model of an atom.
Always remember the chronological order of atomic models: Thomson (1898) тЖТ Rutherford (1911) тЖТ Bohr (1913) тЖТ Quantum Mechanical Model.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants