Consider the following statements : (I) The radius of an anion is larger than that of the parent atom. (II) The ionization energy generally increases with increasing atomic number in a period. (III) T

Question

Consider the following statements : (I) The radius of an anion is larger than that of the parent atom. (II) The ionization energy generally increases with increasing atomic number in a period. (III) The electronegativity of an element is the tendency of an isolated atom to attract an electron. Which of the above statements is/are correct?

Prashant Kotian · Accepted Answer

Correct answer: C. Step 1: Lithium (Li) and Magnesium (Mg) have a diagonal relationship in the periodic table due to their similar ionic potential (charge-to-size ratio). Step 2: This diagonal relationship results in remarkably similar ionic radii for their ions: Li^+ is approximately 76 pm, and Mg^2+ is approximately 72 pm. Step 3: Thus, the ionic radius of Mg^2+ is the closest to that of Li^+.

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