Sodium is a:

Options

A. silvery white, very soft and melts on the palm
B. colourless and hard metal
C. silvery white and very hard metal
D. colourless and very hard metal

Explanation

### Step-by-Step Text Solution:

1. **Identify the Element**: Sodium is represented by the symbol "Na" in the periodic table. It is classified as a metal.

2. **Physical Properties**: Sodium is a silvery-white solid. It is known for its softness, which means it can be easily cut with a knife.

3. **Reactivity**: Sodium is a highly reactive metal. It reacts vigorously with water and air, which indicates its high reactivity.

4. **Melting Point**: Sodium has a low melting point. It can melt at room temperature, which means if you hold it in your palm, it will start to melt.

5. **Metallic Properties**: As a metal, sodium exhibits typical metallic properties such as being shiny (lustrous). However, it is not ductile due to its softness.

6. **Conclusion**: Based on the properties discussed, sodium is classified as a metal.