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(D) Rutherford's $\alpha-$ particle scattering experiment led to the following conclusions:$1$. Most of the $\alpha-$ particles passed straight throug

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$(ii)$ and $(iv)$

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(D) Rutherford's $\alpha-$ particle scattering experiment led to the following conclusions:$1$. Most of the $\alpha-$ particles passed straight through the gold foil,indicating that most of the space inside the atom is empty.$2$. $A$ small fraction of $\alpha-$ particles were deflected by small angles,indicating the presence of a positively charged center called the nucleus.$3$. $A$ very small fraction of $\alpha-$ particles rebounded,indicating that the entire mass and positive charge of the atom are concentrated in a very small volume called the nucleus.Statements $(ii)$ and $(iv)$ are direct conclusions of this experiment. Statement $(i)$ was known from $J$.$J$. Thomson's work,and statement $(iii)$ was discovered later by James Chadwick. Therefore,the correct option is $(ii)$ and $(iv)$.

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Rutherford's $\alpha-$ particle scattering experiment showed that$(i)$ Electrons have negative charge$(ii)$ The mass and positive charge of the atom is concentrated in the nucleus$(iii)$ Neutron exists in the nucleus$(iv)$ Most of the space in atom is emptyWhich of the above statements are correct?