Which of the following elements belongs to second group and fifth period of periodic table?
Which of the following elements belongs to second group and fifth period of periodic table?
Rubidium
Strontium
Caesium
Barium
Solution
- The second group refers to the alkaline earth metals, which are in Group 2 of the periodic table.
- The fifth period corresponds to the row where the element is located.
Strontium (Sr) is in Group 2 (alkaline earth metals) and Period 5 of the periodic table.