Gina summarizes the ideas that led to the current atomic model.
1. Dalton developed the theory that all matter is made of atoms.
2. Thomson discovered that atoms contain electrons.
3. Rutherford discovered that atoms have a nucleus.
4. Schrödinger developed the electron cloud model.
5. Bohr developed the model in which electrons orbit the nucleus.

Which change should Gina apply to correct the summary?
Switch 1 and 5.
Switch 2 and 3.
Switch 4 and 5.
Switch 3 and 1.

The atomic model gives a detailed understanding of the atoms and the sub-atomic particles. The models were given in order by Dalton, Thomson, Rutherford, Bohr, and Schrödinger. Thus, option C is correct.

What is the atomic model?

The atomic model is the representation of the atom of the element along with the sub-atomic particles. The first model was given by Dalton, which stated that matter is composed of atoms.

Later Thomson discovered the presence of the electron present in the sea of the positive charges. In addition, Rutherford gave the presence of the positive nucleus in the middle of the atom.

Bohr's model gave the presence of the electron in the orbit of the atom around the nucleus. At last, the current atomic model was given by Schrödinger and is known as the electron cloud model.

Therefore, option C. Gina should Switch 4 (Schrödinger' model) with model 5 ( Bohr 's model).

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