Which atomic model treats electrons as waves?

• A. Quantum mechanical model
• B. Thomson plum pudding model
• C. Bohr model
• D. Rutherford model

Answer: (A)

Verified step by step guidance

1. Understand that atomic models have evolved over time to better explain the behavior of electrons in atoms.
2. Recall that the Thomson plum pudding model described electrons as negatively charged particles embedded in a positively charged 'pudding,' without wave properties.
3. Recognize that the Rutherford model introduced a nucleus but still treated electrons as particles orbiting the nucleus, not as waves.
4. Know that the Bohr model improved on Rutherford's by quantizing electron orbits but still treated electrons as particles moving in fixed paths.
5. Identify that the Quantum mechanical model treats electrons as waves, using wavefunctions to describe the probability distribution of electrons around the nucleus.