Alkali metals have the properties of metals except they are less dense and softer (option B).
What are alkali metals?
Alkali metals are chemical elements that belong to Group 1 of the periodic table.
With the exception of hydrogen, they (alkali metals) are characterized by being soft, have low melting point, shiny light and very reactive.
Alkali metals include the following:
- lithium (Li)
- sodium (Na)
- potassium (K)
- rubidium (R)
- cesium (Cs)
- francium (Fr)
According to this question, alkali metals have the properties of metals, however, they are less dense and softer than metals.
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