Question

whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?
democritus
rutherford
thomson
dalton

Explanation:

• Democritus proposed the idea of atoms as indivisible particles but not the "plum - pudding" model.
• Rutherford's work led to the nuclear model of the atom, with a small, dense nucleus.
• Thomson discovered electrons and proposed the "plum - pudding" model, where electrons (negative) are embedded in a positively charged "sea" or sphere.
• Dalton's work was on the atomic theory regarding elements and compounds, not this specific atomic model.

Answer:

C. Thomson