There are two ways to find the number of valence electrons in the Alkali Metals. The first is to use the Periodic Table to figure out how many electrons Alkali Metals have in their valence shell. To do so, look at the Group number (groups are the columns). Alkali Metals are in Group 1 on the Periodic Table and therefore all have only one valence electrons (note that this method doesn’t work for the Transition Metals).
You can also look at the electron configuration to determine the number of valence electrons for Fluorine. The number of electrons in the highest energy level gives you the number of valence electrons. Using this method you can also determine that Alkali Metals all have one valence electrons.
Helpful videos:
• Finding Valence Electrons (element): [ Ссылка ]
• Finding Valence Electrons (molecule): [ Ссылка ]
• How to Draw Lewis Structures: [ Ссылка ]
• Valence Electrons for Transition Metals: [ Ссылка ]
Hydrogen Bohr Diagram:
[ Ссылка ]
Lithium Bohr Diagram:
[ Ссылка ]
Sodium Bohr Diagram: [ Ссылка ]
