Your Alkali Metals are those elements on the leftmost column of the Periodic Table (except for Hydrogen).
Lithium (Li), Sodium (Na), Potassium (K), Rubidium, Cesium, Francium.
You can remember them as those that form the Alkali bases, Sodium Hydroxide (NaOH), and Potassium Hydroxide (KOH) among others.
In Pure Metallic form, they would have a neutral charge. However, they are frequently found in ionic form where they loose an electron to form a positive ion with a +1 charge.
Li+
Na+
K+
etc.
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An ion of an alkali metal typically has a charge of +1. This is because alkali metals readily lose one electron to achieve a stable electron configuration with a full outer energy level.
The Alkali Metals have 1 valence electron which they will "give up" in order to form an ion with a +1 charge.
Alkali metals as they appear on the periodic table are neutral. however they are prone to losing electrons and thus take on a positive charge.
All metals are element (or mixtures of elemental metals) so they can't have a charge: ZERO
Alkali metals have a plus one (+1) charge as ions, making them cations, because they must lose one electron to become stable.
the charge on all alkali metal ions is 1 +
Since all alkali metals form a 1+ ion, the number of alkali metal atoms in the formula should be equal to the charge on the negative ion.
As an alkali metal francium form the cation Fr+. A specific name doesn't exist. Transformation in a cation involve the loss of an electron.
Alkali metals are found in group 1 of the periodic table. They will form ions with a 1+ charge. If you meant alkaline earth, they are found in group 2, and will form ions with a 2+ charge.
This depends on each metal.