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lions [1.4K]
4 years ago
11

3)

Chemistry
1 answer:
TiliK225 [7]4 years ago
5 0

Answer: A) Sodium Na and Magnesium Mg

Explanation:

In the period table, you can see that Sodium (group 1) has 11 protons, and Magnesium (group 2) has 12 protons. 11+12=23 protons

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