The milestone of human understanding of the micro world is
A: Thomson discovered electrons by cathode rays.
B: Millikan's determination of electronic charge by oil drop experiment .
C: Rutherford’s "planetary model" of atomic structure.
D: A particle scattering experiment.
A: Thomson discovered electrons by cathode rays.
B: Millikan's determination of electronic charge by oil drop experiment .
C: Rutherford’s "planetary model" of atomic structure.
D: A particle scattering experiment.
举一反三
- The milestone of human understanding of the micro world is A: Thomson discovered electrons by cathode rays. B: Millikan's determination of electronic charge by oil drop experiment . C: Rutherford’s "planetary model" of atomic structure. D: A particle scattering experiment.
- The atomic model of Thomson, is overturned Rutherford with the scattering experiment of a-particle.
- Rutherford proposed ( ) by analyzing the results of the α particle scattering experiment A: Atomic nuclear structure model B: There are neutrons in the nucleus C: Electrons are part of atoms D: The nucleus is made up of protons and neutrons
- Which of the following is not a valid conclusion from Rutherford’s alpha particle scattering experiment? ( )
- Which of the following is not a valid conclusion from Rutherford’s alpha particle scattering experiment? ( ) A: The nucleus must be positively charged B: The nucleus must be very small compared to the atom C: The atom is mainly empty space D: The mass of the atom is mostly concentrated in the nucleus