alkali
Group 7 of the periodic table.
Group 16
group 4
Group 3.
Group 5 (a)
Phosphorous belong to group 15 of the periodic table.
As==Arsenic. This element is a metaloid.
Group 2
Group 2
The noble gases belong to Group 18 of the periodic table.
Oxygen is the first element in group 16 of the periodic table
Scandium and Yttrium