Question

Please answer the above questions​

Answer 1

Answer:

65)d

66)b

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Answer 2

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The size is: O²⁻ > F⁻ > Na⁺ > Mg²⁺ > Al³⁺

This means that the size significantly decreases from O²⁻ to Al³⁺ (option d)

Ionic radii are inversely proportional to Effective Nuclear Charge (ENC)