The $\alpha$-particle scattering experiment of Rutherford concluded that

  • A
    The nucleus is made up of protons and neutrons
  • B
    The number of electrons is exactly equal to number of protons in atom
  • C
    The positive charge of the atom is concentrated in a very small space
  • D
    Electrons occupy discrete energy levels

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Similar Questions

For a $H$ atom,the energy transition from $n = 1$ to $n = 2$ is $10.2 \ eV$. What will be the energy for the same transition in $Be^{3+}$ ion?

The wavelength of a spectral line for an electronic transition is inversely related to :

The potential energy of an electron in an atom is given by:

Which of the following statements is incorrect?

Which of the following transitions will emit the shortest wavelength?

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