Sodium is an alkali metal and is so soft that it can be easily cut by knife.
- Soft metals are those which can be cut and easy to dent, work, or cut without shattering, malleable.
- Sodium metal is soft enough to be cut with a knife.
- Potassium is also a soft metal. The cohesive forces between atoms of these metals are very weak. Thus, the metals have a soft texture.