Lithium is the first of the alkali metals
I'm assuming because it is the first element in the Alkali Metals Group on the Periodic Table.
No element has alkali metals. Some elements: lithium, sodium, potassium, rubidium, caesium and francium are akali metals.
Element group 1 is called the alkali metals, while element group 7 is called the halogens.
the alkali earth metals
hydrogen
No, alkali metals are not the only earth metals. Earth metals include both alkali metals and alkaline earth metals. Alkaline earth metals are a group of elements in the periodic table that are chemically similar to, but less reactive than, alkali metals. Examples of alkaline earth metals include magnesium, calcium, and barium.
Hydrogen is a non-metal; it's in group VII
Alkali metals, alkaline earth metals, transition metals
Potassium belongs to the alkali metal family on the periodic table. It is in Group 1, which is the first column of the periodic table.
Alkali Metals.
Lithium
You think probable to the first group of elements - alkali metals.