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timofeeve [1]
4 years ago
9

The periodic table was developed in order to group and organize elements with similar physical and chemical properties.

Biology
2 answers:
Semenov [28]4 years ago
6 0
Halogens because they are in group 17
Tanya [424]4 years ago
4 0
A. halogens they're in group 17
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