Which scientist and atomic model are correctly matched?

• A. John Dalton — Quantum mechanical model
• B. Ernest Rutherford — Nuclear model
• C. Niels Bohr — Plum pudding model
• D. J.J. Thomson — Planetary model

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the key atomic models and the scientists associated with them. Each scientist proposed a different model of the atom based on experimental evidence available at their time.
2. Step 2: Recall that John Dalton proposed the 'Billiard Ball' model, which described atoms as solid, indivisible spheres, not the Quantum mechanical model.
3. Step 3: Recognize that Ernest Rutherford is credited with the Nuclear model of the atom, where a dense, positively charged nucleus is surrounded by electrons, based on his gold foil experiment.
4. Step 4: Know that Niels Bohr developed the Bohr model (sometimes called the Planetary model), where electrons orbit the nucleus in fixed energy levels, not the Plum pudding model.
5. Step 5: Remember that J.J. Thomson proposed the Plum pudding model, which described the atom as a sphere of positive charge with electrons embedded within it, not the Planetary model.