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Which of the following atoms has the lowest ionization potential?

Options

  1. A₇¹⁴ ~N
  2. B₅₅¹³³ Cs
  3. C₁₈⁴⁰ Ar
  4. D₈¹⁶ ~O

Correct answer

B. ₅₅¹³³ Cs

Step-by-step solution

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