Problem 4 Analyze statements i, ii, and ii as true or false. Explain why each is

Question

Problem 4 Analyze statements i, ii, and ii as true or false. Explain why each is true or false. Circle the correct answer A through E Which of the following statement (s) regarding ionization energies is/are correct? i. Be > B because it takes less energy to remove a 2p electron in B than an 2s electron in Be i. Mg > Sr because the electrons in Mg are closer to the nucleus than in Sr ii. The removal of the 4th electron in Si, would require a massive increase in energy compared to the removal of the 3rd electron. A. i only B. ii only C. ii only D. i and ii E. ii and iii

Explanation / Answer

1. True. Since s orbital is fully filled requires more energy.

2.True. Since no of shells in Sr is more than Mg therefore last e is far from nucleus in Sr thus have less IE.

3. False. Since 3rd e is going to be be removed from filled s orbital therefore has more IE than 4th e. Therefore given statement is wrong.

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