Practice question · Put in order
Place these atomic models and discoveries in chronological order.
- Thomson's discovery of the electron
- Chadwick's discovery of the neutron
- Rutherford's nuclear atom
- Dalton's indivisible atom
Hints
- Start with the model that predates any subatomic particle.
- The neutron was the last of the three particles to be found.
Show the answer
- Dalton's indivisible atom
- Thomson's discovery of the electron
- Rutherford's nuclear atom
- Chadwick's discovery of the neutron
Why
Dalton (1803) preceded any subatomic particle; Thomson found the electron (1897); Rutherford inferred the nucleus (1911); Chadwick identified the neutron (1932).
Practise Atomic Models and Isotopes
The app has 4 more questions on this lesson, and keeps your place in the course. Chemistry I is free to start.
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