CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
Substances having similar chemical properties, but different physical properties are called _________.
Isotopes
E. Goldstein reported the presence of _________ inside the atom.
proton
Isotopes contain the same number of ___________ but different number of _________.
protons, neutrons
The negative particle discovered by J.J. Thomson was given the name ________.
electron
E. Rutherford used ____________ particles in his scattering experiments.
alpha
Fill in the blanks:
E. Rutherford used ................ particles in his scattering experiments.