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ASVAB General Science Questions

Category - Science

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In the periodic table of elements, how are periods organized?
  1. Vertically, into columns
  2. Horizontally, into rows
  3. By their abundance
  4. Alphabetically
Explanation
Answer: B - In the periodic table of elements, periods are organized horizontally, into rows. Elements in the same period, or row, have the same number of atomic orbitals or electron shells. The number of orbitals or electron shells increases from top row to bottom row.
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