Which element in Group 2 (alkaline earth metals) is the most reactive under typical conditions?

To which element group does argon belong?

Which element is found in period 3, group 2 of the periodic table?

Which element would be expected to have chemical properties most similar to calcium (Ca) based on periodic table group trends?

Which element is classified as an alkali metal (Group 1) on the periodic table?

Which element is a member of the halogen family (Group 17) on the periodic table?

Which type of element is least likely to react with other elements under normal conditions?

Which element is in the noble gas family (Group 18) on the periodic table?