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Kobotan [32]
3 years ago
12

1. a vertical column of elements in the periodic table

Biology
2 answers:
ahrayia [7]3 years ago
6 0
Group
  atomic mass unit
 period
 small whole-number
valkas [14]3 years ago
3 0
1.  group
2.  atomic mass unit
3. period
4. small whole-number
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