Question

place these atomic models in order from oldest to most recent. a b c d d, b, a, c a, c, d, b c, a, d, b a, b, c, d

Explanation:

The plum - pudding model (A) is one of the oldest atomic models proposed by J.J. Thomson. The nuclear - shell model (B) is a more recent model. The raisin - cake model (C) is similar to the plum - pudding model in concept and is also an older model. The Bohr model (D) was proposed after the plum - pudding/raisin - cake models but before the more complex nuclear - shell model. The order from oldest to most recent is C (raisin - cake model which is like the early ideas), A (plum - pudding model), D (Bohr model), B (nuclear - shell model).

Answer:

C, A, D, B