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sergey [27]
3 years ago
13

1.As with any grid, the periodic table has ________ (left to right) and __________ (up and down).

Chemistry
1 answer:
Inga [223]3 years ago
6 0

Answer:

  1. rows and columns
  2. period
  3. atomic orbitals
  • valence electrons

4.similar properties

5.electrons are very reactive

  • the outermost
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