Structure of
an atom
,HISTORY OF ATOM
Discovered by John Dalton in the year 1803 it is derived from the Greek word atomos
meaning indivisible
In 1904 JJ Thomson discovered electrons which were supposed to have negative charges
He called them corpuscles
In1911 Ernest Rutherford discovered protons that carry a positive charge
In 1913 Neil Bohr proposed the present day atomic model in which he said that the atom
contains 2 parts the central nucleus containing the proton and the electron which move
around the protons in an imaginary path
I 1935 Chadwick discovered the neutrons having no charge
, c
an atom
,HISTORY OF ATOM
Discovered by John Dalton in the year 1803 it is derived from the Greek word atomos
meaning indivisible
In 1904 JJ Thomson discovered electrons which were supposed to have negative charges
He called them corpuscles
In1911 Ernest Rutherford discovered protons that carry a positive charge
In 1913 Neil Bohr proposed the present day atomic model in which he said that the atom
contains 2 parts the central nucleus containing the proton and the electron which move
around the protons in an imaginary path
I 1935 Chadwick discovered the neutrons having no charge
, c
