The scientist who developed the nuclear or planetary model of the atom is Ernest Rutherford. Here are the steps he took to develop this model:

1. Rutherford conducted an experiment known as the Gold Foil Experiment or the Geiger-Marsden experiment. He directed a beam of alpha particles (helium nuclei) at a thin gold foil.

2. He expected the alpha particles to pass straight through the foil, based on the then-accepted "plum pudding" model of the atom. This model proposed that atoms were a uniform "pudding" of positive charge with "plums" of negative electrons scattered throughout.

3. Instead, Rutherford found that while most alpha particles did pass straight through the foil, a small number were deflected at large angles, and some even bounced back.

4. Rutherford concluded that the "plum pudding" model could not be correct. The deflections could only be explained if the positive charge and most of the mass of the atom were concentrated in a small central nucleus, with the electrons orbiting this nucleus much like planets orbit the sun.

5. This led to the development of Rutherford's nuclear or planetary model of the atom.

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The scientist who developed the nuclear or planetary model of the atom is Ernest Rutherford. Here are the steps he took to develop this model:

1. Rutherford conducted an experiment known as the Gold Foil Experiment or the Geiger-Marsden experiment. He directed a beam of alpha particles (helium nuclei) at a thin gold foil.

2. He expected the alpha particles to pass straight through the foil, based on the then-accepted "plum pudding" model of the atom. This model proposed that atoms were a uniform "pudding" of positive charge with "plums" of negative electrons scattered throughout.

3. Instead, Rutherford found that while most alpha particles did pass straight through the foil, a small number were deflected at large angles, and some even bounced back.

4. Rutherford concluded that the "plum pudding" model could not be correct. The deflections could only be explained if the positive charge and most of the mass of the atom were concentrated in a small central nucleus, with the electrons orbiting this nucleus much like planets orbit the sun.

5. This led to the development of Rutherford's nuclear or planetary model of the atom.

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The scientist who developed the nuclear or planetary model of the atom is Ernest Rutherford. Here are the steps he took to develop this model:

1. Rutherford conducted an experiment known as the Gold Foil Experiment or the Geiger-Marsden experiment. He directed a beam of alpha particles (helium nuclei) at a thin gold foil.

2. He expected the alpha particles to pass straight through the foil, based on the then-accepted "plum pudding" model of the atom. This model proposed that atoms were a uniform "pudding" of positive charge with "plums" of negative electrons scattered throughout.

3. Instead, Rutherford found that while most alpha particles did pass straight through the foil, a small number were deflected at large angles, and some even bounced back.

4. Rutherford concluded that the "plum pudding" model could not be correct. The deflections could only be explained if the positive charge and most of the mass of the atom were concentrated in a small central nucleus, with the electrons orbiting this nucleus much like planets orbit the sun.

5. This led to the development of Rutherford's nuclear or planetary model of the atom.

Which scientist developed the nuclear or planetary model of the atom

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