Respuesta :

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Explanation:

  1. F Cl Br
  • ionization energy decreases we move down the group
  • so Br<Cl<F

2. Na K Li

  • ionization energy decreases we move down the group
  • so K<Na<Li

3. C N O F

  • ionization energy increases as we move across the peroid
  • so C<N<O<F

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