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Which set of the below elements are in the same period. 1. Li, Be, C, O 2. H, Li, Be 3. F, CI, Br, I 4. H, He, Li, Be
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11 votes
Which set of the below elements are in the same period.

1. Li, Be, C, O

2. H, Li, Be

3. F, CI, Br, I

4. H, He, Li, Be

Which set of the below elements are in the same period. 1. Li, Be, C, O 2. H, Li, Be-example-1
User Conmadoi
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4.3k points

2 Answers

12 votes

Answer:

1

Step-by-step explanation:

User Henry Zhu
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4.1k points
8 votes

1

Step-by-step explanation:

because they period two

User Moink
by
4.6k points
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