Question

In each of the following question match column -I and column -II. Select correct Answer. (a) Bohr atom model (p) fixed for the atom (b) Ionization potential (q) Nucleus (c) Rutherford atom model (r) stationary orbits (d) Thomson atom model (s) In atom positive and Negative charge are distributed uniformly (A) $\mathrm{a} \rightarrow \mathrm{s}, \mathrm{b} \rightarrow \mathrm{r}, \mathrm{c} \rightarrow \mathrm{q}, \mathrm{d} \rightarrow \mathrm{p}$ (B) $\mathrm{a} \rightarrow \mathrm{r}, \mathrm{b} \rightarrow \mathrm{p}, \mathrm{c} \rightarrow \mathrm{q}, \mathrm{d} \rightarrow \mathrm{s}$ (C) $\mathrm{a} \rightarrow \mathrm{p}, \mathrm{b} \rightarrow \mathrm{r}, \mathrm{c} \rightarrow \mathrm{s}, \mathrm{d} \rightarrow \mathrm{q}$ (D) $\mathrm{b} \rightarrow \mathrm{p}, \mathrm{c} \rightarrow \mathrm{q}, \mathrm{b} \rightarrow \mathrm{r}, \mathrm{d} \rightarrow \mathrm{s}$

Short answer

The short answer is: (B) a → r, b → p, c → q, d → s

Step-by-step solution

Atomic Models and their Characteristics

There are three atomic models mentioned in column I, namely: 1. Bohr atom model: It proposes the concept of stationary orbits where electrons revolve around the nucleus in fixed paths. 2. Rutherford atom model: It is based on a small positively charged nucleus surrounded by negatively charged electrons. 3. Thomson atom model: It is known as the "plum pudding model," in which positive and negative charges are distributed uniformly throughout the atom.

Matching Column I with Column II

Let's match the atomic models and the ionization potential with their corresponding characteristics. a. Bohr atom model ↔ stationary orbits (r) b. Ionization potential ↔ fixed for the atom (p) c. Rutherford atom model ↔ Nucleus (q) d. Thomson atom model ↔ In atom positive and Negative charge are distributed uniformly (s) The correct matches are: a → r, b → p, c → q, d → s Hence, the correct answer is (B).