Answered

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Match the scientists to their contributions:

A. J. J. Thomson
1. Discovered an electron's charge
2. Showed that atoms contained electrons

B. Albert Einstein
1. Explained the photoelectric effect

C. Ernest Rutherford
1. Presented the first atomic model
2. Showed that an atom contained a nucleus

D. John Dalton
1. Proposed atomic theory

E. Robert Millikan
1. Measured the electron's charge

Sagot :

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Final answer:

J. J. Thomson discovered electrons and proposed the Plum Pudding Model, Ernest Rutherford discovered the nucleus, and Niels Bohr introduced the concept of electron orbitals.


Explanation:

J. J. Thomson discovered electrons in 1897 and proposed the Plum Pudding Model in 1904. Ernest Rutherford discovered the nucleus of the atom, showing positive charge concentrated at the center. Niels Bohr contributed the idea of electrons orbiting the nucleus in energy levels.


Learn more about Atomic Theory here:

https://brainly.com/question/28853813


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