Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.
Overlapping red and blue balls in the center with a circular fuzzy green cloud outside them.
What experimental evidence led to the development of this atomic model from the one before it?
A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil.
Experiments with water vapor showed that elements combine in specific proportions.
Equations were used to identify regions around the nucleus where electrons would likely be.
Cathode rays were bent in the same way whenever a magnet was brought near them.
1 answer
The experimental evidence that led to the development of this atomic model from the one before it is the fact that a few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil. This observation was made during the famous gold foil experiment conducted by Ernest Rutherford, which led to the discovery and understanding of the atomic nucleus. The observation of bouncing particles indicated that atoms have a small, positively charged, and dense nucleus, leading to the development of the new atomic model.
1 answer