5.1.1a Structure of the atom and ions

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Question 19

In the $α\alpha$ -particle scattering experiment, a beam of $α\alpha$ -particles is directed at a thin gold foil.

Which row correctly describes a key observation from this experiment and the corresponding conclusion that it leads to?

Observation: A very small fraction of the $α\alpha$ -particles are deflected through angles greater than $90∘90^\circ$
Conclusion: Most of the mass and positive charge of the atom are concentrated in a tiny nucleus

Observation: A very small fraction of the $α\alpha$ -particles are deflected through angles greater than $90∘90^\circ$
Conclusion: The positive charge is uniformly distributed throughout the entire volume of the atom

Observation: The majority of the $α\alpha$ -particles are deflected through angles greater than $90∘90^\circ$
Conclusion: Most of the mass and positive charge of the atom are concentrated in a tiny nucleus

Observation: The majority of the $α\alpha$ -particles are deflected through angles greater than $90∘90^\circ$
Conclusion: The positive charge is uniformly distributed throughout the entire volume of the atom

In the $α\alpha$ -particle scattering experiment, a beam of $α\alpha$ -particles is directed at a thin gold foil.

Which row correctly describes a key observation from this experiment and the corresponding conclusion that it leads to?

5.1.1a Structure of the atom and ions

Question 19

Markscheme

5.1.1a Structure of the atom and ions

Question 19

Markscheme

5.1.1a Structure of the atom and ions

Question 19

5.1.1a Structure of the atom and ions Questions

5.1.1a Structure of the atom and ions

Question 19

5.1.1a Structure of the atom and ions Questions