The three elements calcium, strontium and barium have the following similarities:
A. All are metals
B. Each has an oxide that is alkaline in nature
C. Each has valency 2
D. All of the above
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Answer:
D. All of the above
Explanation:
The Group 2 alkaline earth metals include Calcium, Barium, Strontium and are soft, silver metals All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2.
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