what did thomsons and rutherfords experiments have in common?\nthey both used charged particles in their…

Brief Explanations:

Thomson's experiment led to the discovery of the electron and Rutherford's experiment was crucial in understanding the nuclear - structure of the atom. Thomson did not compare the atom to an explosive sphere. He did not use emission spectra to discover electron clouds. He also did not use charged particles in the same sense as the description in the first option. Rutherford's work was not about discovering electron clouds. However, Thomson's work on cathode - ray tubes and Rutherford's gold - foil experiment both contributed to our understanding of the sub - atomic world. The most accurate among the given options is that they both made contributions related to the discovery of aspects of the atom's structure which can be related to the idea of electron clouds in a broader sense of atomic structure discovery.

Answer:

D. They both discovered electron clouds.