Solution:
Metal that can be cut with a knife is Sodium.Metals are very hard materials and can not be easily cut with a knife. On the other hand, Non-metals can easily be cut with a knife because they are soft. But there are some soft metals. For example, Sodium (Na). It can be cut with a knife and therefore has many applications. On the other hand, iron (Fe), Gold (Au), and Magnesium (Mg) are hard metals; they have stronger metallic bonds, therefore, cannot be easily cut with a knife.
