Alkali metals are a group of elements in Group 1 of the periodic table, known for their high reactivity and tendency to form +1 ions. These metals include lithium, sodium, potassium, rubidium, cesium, and francium.
5 Must Know Facts For Your Next Test
Alkali metals have a single electron in their outermost shell.
They are highly reactive, especially with water, forming hydroxides and releasing hydrogen gas.
Alkali metals are soft and can be cut with a knife; they also have low melting points compared to most other metals.
These elements readily form ionic compounds by losing their one valence electron to achieve a stable noble gas configuration.
They exhibit characteristic colors when burned: lithium produces a red flame, sodium yields a yellow flame, and potassium creates a lilac flame.