STRUCTURE OF ATOM

An alpha particle contains I. 4 positive charge and 2 mass unit II. 2 positive charge and 4 mass unit III. 2 positive charge and 2 mass unit IV. 4 positive charge and 4 mass unit In an alpha scattering experiment, few alpha particles rebounded because I. Most of the space in the atom is occupied II. Positive charge of the atoms very little space III. The mass of the atom is concentrated in the centre IV. All the positive charge and mass of the atom is concentrated in small volume The cathode ray experiment was done for the first time by: a)J.J. Thomson b)John Dalton c)Goldstein d)Rutherford The nucleus of an atom contains: a)Protons b)Electrons c)Protons and neutrons d)Neutrons What is in the center of the Rutherford model? A single proton Multiple electrons A nucleus Neutrons Where are the electrons in the Rutherford model of the atom? The electrons are outside of the nucleus. The electrons are inside the nucleus. There are no electrons in the Rutherford Model. Electrons are both inside and outside of the nucleus. How did the actual results of the gold foil experiment differ from the expected results? There was no difference between the expected and actual results. Rutherford expected particles to travel through the atoms, but instead, they ricocheted and rebounded in unexpected directions. The alpha particles caused the gold foil to undergo nuclear fusion instead of fission. None of these answers are correct.