Question

Match the following:

$\begin{array}{cccc}\text{(i)}& \text{Oxygen}& \text{(A)}& \text{Metal}\\ \text{(ii)}& \text{Sodium}& \text{(B)}& \text{Metalloid}\\ \text{(iii)}& \text{2ex Boron}& \text{(C)}& \text{Non-metal}\\ \text{(iv)}& \text{Gold}& & \\ \text{(v)}& \text{Carbon dioxide}& & \end{array}$

The correct pairs are:-

• A. (ii, v) – C, (i, iv) - B, (iii) - A
• B. (i, iv) – C, (ii, v) - B, (iii) - A
• C. (i, v) – C, (ii, iv) - B, (iii) - A
• D. (i, v) – C, (iii) - B, (ii, iv) - A

Answer 1

The correct option is D

(i, v) – C, (iii) - B, (ii, iv) - A

The elements can be classified as metals, nonmetals, or metalloids.
Metals are good conductors of heat and electricity, and are malleable and ductile. Most of the metals are solids at room temperature, with a characteristic silvery shine. For example: sodium, calcium and gold.
Nonmetals are generally poor conductors of heat and electricity, most of them are gases at room temperature. For example: carbon, oxygen, fluorine etc.
The metalloids are intermediate in their properties, meaning that they depict the properties of both metals and non-metals under different circumstances. For example: boron, silicon etc.