JAMB - Chemistry (1981 - No. 9)
Sodium and potassium belong to the same group of the Periodic Table. This is because?
both are metals
both are soft and lighter than water
both form cations by losing electrons
both have identical electronic configuration
both react with water vigorously
Пояснення
\(_{11}\)Na = 2 8 1
\(_{19}\)K = 2 8 8 1
Both have one electron in their outermost shell( similar electronic configuration). hence they are found in the same group of the periodic table. They both lose an electron to form cations but that is not the reason why they are in group one.