Question

atomic model proposed by j. j. thomson
model shows negative electrons floating in a \soup\ of positively charged material
model shows that the atom is not further divided into subatomic particles
model shows that electrons can only travel in discrete orbits at specific distances from the nucleus
model shows a positively charged core that is surrounded by mostly empty space and negatively charged electrons orbiting the core

Explanation:

To determine the atomic model proposed by J.J. Thomson, we recall his "plum - pudding" model. In this model, negative electrons are embedded (or floating) in a positively charged "soup" or matrix of material.

Looking at the descriptions:

• The option with the description "model shows negative electrons floating in a'soup' of positively charged material" matches Thomson's atomic model. From the visual elements (the diagrams), the one that represents electrons in a positive - charge - filled region (like the plum - pudding model) is the relevant one. If we assume the labels are as per the text, the option with this description is the correct representation of Thomson's model.

Answer:

The atomic model proposed by J.J. Thomson is the one with the description "model shows negative electrons floating in a'soup' of positively charged material" (corresponding to the relevant diagram/option, e.g., if the option with this text is labeled as, say, the one with the diagram showing electrons in a positive - charge - like region). If we take the options as per the given text - diagram association, the answer is the model with the description "model shows negative electrons floating in a'soup' of positively charged material".