Which of the following statements about the general properties of the main group metals is not correct?
A) Metallic character increases down a group.
B) Metallic character decreases left to right across a period.
C) The majority of main group metal oxides are acidic.
D) Main group metals tend to form cations (lose electrons) in their reactions.
E) Main group metal reactivity tends to increase down a group.
Correct Answer:
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Q7: Within a group,as the atomic numbers of
Q8: A solution may contain NaCl,MgCl2,and/or AlCl3.When sodium
Q9: Metals usually act as
A)oxidizing agents.
B)reducing agents.
C)conjugate bases.
D)conjugate
Q10: All of the following elements have the
Q11: Which element in Group IVA has the
Q13: Which of the following is not a
Q14: What is the metallurgical process of roasting?
A)A
Q15: Choose the most metallic element.
A)As
B)P
C)Bi
D)N
E)Sb
Q16: Which of the following statements is true?
A)An
Q17: Bauxite is the principal ore of which
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