Chem 102A – 01 – Fall 2008 Exam 3 - Suggested Review Questions Chapter 8.5 and onward: (1)Which of the following ions is NOT paramagnetic? Electron configuration contains pairedelectrons a)C 2s22p2b)B 2s22p1c)N 2s22p3d)O 2s22p4e)Mg 3s2(2)Which of the following ions is NOT diamagnetic? Electron configuration contains unpairedelectrons (3)For which of the following processes is the first ionization energy? Energy requires to remove a single electron from a neutral gaseousatom (4)Which of the following has the highest first ionization energy? Increasing across a row, except Be > B, N > O (5)Generally, there is a decrease in atomic size as one moves a)down a group. b)up a group. Principal quantum number (n) decreases c)from left to right across a period. Effective nuclear charge (Zeff) increases d)from right to left across a period. e)both b) and c) (6)Which of the following atoms or ions is the largest? (7)The first ionization energy for K is 419 kJ/mol. The electron affinity for Br is −325 kJ/mol. Then ΔE for the reaction, K(g) + Br(g) →K+(g) + Br−(g) is:
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