1. As a result of Rutherford's scattering experiment, it was concluded that   the center of the atom is empty.   atomic mass is spread over the whole atom.   most of the atom is empty.   the center of the atom has a negative charge.   Hint Half-n-half Clue   2. The number of protons present in the atom of an element is known as the   Mass Number   Atomic Weight   Proton Number   Atomic Number   Half-n-half Clue   3. Electrons are   negatively-charged particles with negligible mass.   positively-charged particles with mass.   negatively-charged particles with mass.   positively-charged particles with negligible mass.   Half-n-half Clue   4. The particle discovered in the anode ray experiments is the   meson   neutron   electron   proton   Half-n-half Clue   5. The volume of the nucleus as compared to the volume of the atom is   Negligible   50%   25%   75%   Half-n-half Clue   6. The particle discovered as a result of cathode ray experiments is the   nucleus   electron   proton   neutron   Half-n-half Clue   7. The sum of the numbers of the protons and neutrons in the atom of an element is known as   Atomic Number   Isotope Number   Molecular Weight   Mass Number   Half-n-half Clue