Answer: Rutherford
Explanation:
In 1911, physicist Ernest Rutherford proposed the description of the atomic model, otherwise known as the nuclear atom ( atoms containing a nucleus)
Scientists who proposed an atomic model with a nucleus were Bohr and Rutherford. Hence, options A and B are correct.
The matter which can be separated easily, and also consisted of molecules that can be agglomerated. These molecules will react and are composed of atoms. This composition is because of the chemical bonds which are not easy to break. If an atom is observed closely, then two smaller particles will be visible, which are known as electrons and nuclei.
When a theory is prepared, just for the explanation of the structure of an atom, that theory is a kind of model and that model is known as an atomic model. With the passage of time, various experiments were done in the model, and after a certain time nucleus was added to it. The whole experiment took place under the direction of Rutherford and a German Physicist.
Thus, Options A and B are correct.
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