alkali earth metal
Nitrogen is in period 2 and column 15 of a wide form periodic table.
Strontium is an alkaline earth metal; group 2 and period 5 in the periodic table of Mendeleev.
Neon is in period 2 of the periodic table, and in group 18, the noble gases
Group 4 elements on the periodic table contain no period 2 elements whatsoever.
Group 2, period 2
Period 2, Group 17
Oxygen is in Period 2 , Group 16 ( VI A) of periodic table
Lithium is in the first period of the periodic table. It is the first element in the alkali metal group.
Magnesium's group number is 2. Its period number is 3.
beryllium, Be
Carbon is in period 2, group 14 (or group 4A), and the p-block of the periodic table.
Barium, atomic number 56, is in group 2 of period VI (six) in the periodic system.