JAMB - Chemistry (2005 - No. 30)
An element will readily form an electrovalent compound if its electron configuration is
2, 8, 1
2, 8, 4
2, 8, 8
2, 8, 5
Explicaţie
Alkali metals readily form electrovalent bonds because they have a single valence electron that they easily lose, becoming positively charged ions, and readily react with nonmetals to form ionic compounds.
Only option A has the electronic configuration that fits the description of alkali metals; 2, 8, 1