Chapter 7 Review Packet 11-14-02[1]

Chlorine is more metallic than sodium 17 which of the

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chlorine is more metallic than sodium 17. Which of the following correctly represents the electron affinity of bromine? a. Br(g) Br + (g) + e - b. Br(g) + e - Br - (g) c. Br 2 (g) + e - Br - (g) d. Br 2 (g) + 2 e - 2 Br - (g)
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e. Br + (g) + e - Br(g) 18. Which one of the following is a metalloid? a. Ge b. S c. Br d. Pb e. C 19. Of the elements below, __________ is the most metallic. a. Na b. Mg c. Al d. K e. Av 20. Element M reacts with chlorine to form a compound with the formula MCl 2 . Element M is more reactive than magnesium and has a smaller radius than barium. This element is __________. a. Sr b. K c. Na d. Ra e. Be 21. Of the elements below, _____ has the highest melting point. a. Ca b. K c. Sc d. Na e. Ba 22. Which of these oxides is most basic? a. K 2 O b. Al 2 O 3 c. CO 2 d. MgO e. Na 2 O 23. Of the following oxides, __________ is the most acidic. a. CaO b. CO 2 c. Al 2 O 3 d. Li 2 O e. Na 2 O 24. Na reacts with element X to form an ionic compound with the formula Na 3 X. Ca will react with X to form __________. a. CaX 2 b. CaX c. Ca 2 X 3 d. Ca 3 X 2 e. Ca 3 X 25. What is the coefficient of M when the following equation is completed and balanced if M is an alkali metal? M(s) + H 2 O(l) a. 1 b. 2 c. 3 d. 4 e. 0
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26. Of the following substances, _____ is always produced when an active metal reacts with water. a. NaOH b. H 2 O c. CO 2 d. H 2 e. O 2 27. This element is more reactive than lithium and magnesium but less reactive than potassium. This element is __________. a. Na b. Rb c. Ca d. Be e. Fr 28. The elements __________ could be used to produce a red or crimson color in fireworks. a. Mg or Ba b. Sr c. Ca, Sr, or Li d. Ba e. Na or K 29. Oxides of the active metals combine with acid to form ____________. a. hydrogen gas b. metal hydrides c. water and a salt d. oxygen gas e. metal hydroxides 30. Oxides of most nonmetals combine with water to form ____________. a.
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chlorine is more metallic than sodium 17 Which of the...

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