Structure of Atom — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom1 Mark
MCQ
The first model of an atom was given by $ ..........$
A
N. Bohr
B
E. Goldstein
C
Rutherford
✓
J.J. Thomson
✓
Answer
Correct option: D.
J.J. Thomson
Sir J.J Thomson gave the first model of atom.
He by means of cathode $-$ ray experiment discovered the existence of negatively charged particles in an atom which led to the discovery of electrons.
He gave the plum $-$ pudding model of an atom in which electrons are embedded in atom $-$ like currants.
Positive electrons are distributed all over the atom.
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