Given the Three Statements Below, Pick the Best Answer

question 45

Multiple Choice

Given the three statements below, pick the best answer.
I. The Z_eff for the highest energy electron in Be is higher than the Z_eff for the highest energy electron for N.
II. The second ionization energy for Mg is greater than the first ionization energy of Na.
III. The species O^{2 -} , Ne, and Na are isoelectronic.

• A) only I is true
• B) only II is true
• C) II and III are true, I is false
• D) I and III are true, II is false
• E) I and II are true, III is false

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