Question

which scientist developed the first model of the atom that proposed the structure of the inside of an atom?
○ dalton
○ bohr
○ rutherford
○ thomson

Explanation:

To determine the scientist who developed the first model proposing the internal structure of an atom, we analyze each option:

• Dalton's atomic model (Dalton's theory) mainly focused on the idea that atoms are indivisible and combine in whole - number ratios, but it did not propose a detailed internal structure of the atom.
• Bohr's model (Bohr's atomic model) described electrons orbiting the nucleus in specific energy levels, but it was not the first model to propose the internal structure of the atom.
• Rutherford's model (Rutherford's nuclear model) proposed that an atom has a dense, positively - charged nucleus at the center with electrons orbiting around it. However, J.J. Thomson's model came before Rutherford's.
• Thomson (J.J. Thomson) developed the "plum - pudding" model. In this model, he proposed that an atom is a sphere of positive charge with negatively - charged electrons embedded in it. This was the first model that proposed a structure for the inside of an atom.

Answer:

D. Thomson