Atom cannot be divided into simple unitstheorized by________________?
Correct answer: B. Dalton
- A. Rutherford
- B. Dalton
- C. Bohr
- D. Schrodinger
Explanation
Dalton proposed that matter is made of tiny indivisible atoms, which was an early atomic theory. Rutherford discovered the nucleus, while Bohr and Schrödinger developed models of atomic structure. Students may choose a because Rutherford's model is a famous atomic model, but he did not propose the indivisible-atom theory.
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About Discovery of the Proton
The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.
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