Question

which set lists the atomic models and scientists from the oldest to the most recent? images of atomic models labeled w, x, y, z options: x, z, w, y; x, z, w, x; w, x, y, z; z, x, w, y

Explanation:

Step1: Identify each atomic model

• X: Dalton's solid sphere model (oldest, thought atom was indivisible sphere).
• Z: Thomson's plum - pudding model (electrons in a positive "soup").
• W: Bohr's model (electrons in fixed orbits around nucleus).
• Y: Quantum mechanical model (electrons in probability clouds, most recent).

Step2: Order from oldest to most recent

Oldest is X (Dalton), then Z (Thomson), then W (Bohr), then Y (Quantum). So the order is X, Z, W, Y.

Answer:

A. X, Z, W, Y (assuming the first option is X, Z, W, Y as per the options shown)