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group 2
Calcium, Magnesium, and Radium are all in group two of the periodic table.
A group is a column in the periodic table of elements.
Elements from the group 2 of the periodic table form cations.
Group 2
group 2
Nitrogen is in group 15 on the periodic table. Nitrogen is in group 15 (and period 2).
On the left of the periodic table, especially group 1 and group 2 elements.
Strontium is an alkaline earth metal; group 2 and period 5 in the periodic table of Mendeleev.
Group 4 elements on the periodic table contain no period 2 elements whatsoever.
Group 2, period 2
Lead is not placed in 1 or 2 group of periodic table, it is in IV-A (14th) group of periodic table, however in the scheme of salt analysis it is placed in ist and 2nd groups of basic radicals.