Natalie observes these characteristics in the model of an atom. (i) includes positive charge (ii) contains electrons (iii) explains the photoelectric effect (iv) suggests the probable location of electrons Which model is Natalie most likely examining?

The electron-cloud model has a positively charged nucleus and electrons, and it describes where electrons are most likely to be found. Its quantum-mechanical ideas are also connected to explaining the photoelectric effect. The plum pudding model includes positive charge and electrons, but it does not describe probable electron locations.

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