Question

question 14 of 25 what were j. j. thomsons ideas called? a. the plum - pudding model b. the photoelectric effect c. quantum mechanics d. the atomic theory

Explanation:

J. J. Thomson proposed the plum - pudding model of the atom. The photoelectric effect is related to Einstein, quantum mechanics is a broader field, and atomic theory has contributions from multiple scientists but Thomson's specific idea was the plum - pudding model.

Answer:

A. The plum - pudding model