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Which of the following arrangements indicates the correct decreasing order of ...

Which of the following arrangements indicates the correct decreasing order of ionization energy of period 3 elements?
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  • A Na, Al, P, Cl
  • B Cl, P, Al, Na
  • C Na, P, Cl, Al
  • D Al, Na, P, Cl
Correct Answer: Option B
Explanation:
As you move across a period, first ionization energy increases.

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