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Natalka [10]
2 years ago
7

The element that has a valence configuration of 5s2 is Ba Ca Be Sr Mg

Chemistry
1 answer:
marysya [2.9K]2 years ago
5 0

Answer: Sr

Explanation: Strontium electron configuration is [Kr] 5s2. It belongs to group 2 and period 5 of the periodic table.

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