Which one did Rutherford consider to be supported by the results of experiments in which $\alpha - $ particles were scattered by gold foil?
- AThe nucleus of an atom is held together by forces which are much stronger than electrical or gravitational forces.
- BThe force of repulsion between an atomic nucleus and an $\alpha - $ particle varies with distance according to inverse square law.
- C$\alpha - $ particles are nuclei of Helium atoms.
- DAtoms can exist with a series of discrete energy levels.
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View SolutionStatement $(A)$: As one considers orbits with higher values of $n$ in a hydrogen atom,the electric potential energy of the atom increases.
Statement $(B)$: In Thomson's model,an atom is a spherical cloud of positive charges with electrons embedded in it.
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Statement $(C)$: The orbital picture in Bohr's model of the hydrogen atom was consistent with the uncertainty principle.
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View SolutionAn $\alpha$-particle of energy $5 \text{ MeV}$ is moving forward for a head-on collision. The distance of closest approach from the nucleus of atomic number $Z=50$ is . . . . . . $\times 10^{-14} \text{ m}$.
$(k=9 \times 10^{9} \text{ SI}, e=1.6 \times 10^{-19} \text{ C}, 1 \text{ eV}=1.6 \times 10^{-19} \text{ J})$
$(k=9 \times 10^{9} \text{ SI}, e=1.6 \times 10^{-19} \text{ C}, 1 \text{ eV}=1.6 \times 10^{-19} \text{ J})$
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