All of the halogens ________.
A) exist under ambient conditions as diatomic gases
B) tend to form positive ions of several different charges
C) tend to form negative ions of several different charges
D) exhibit metallic character
E) form salts with alkali metals with the formula MX
Correct Answer:
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Q69: In nature,the noble gases exist as _.
A)monatomic
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Q72: Ozone is a a(n)_ of oxygen.
A)isotope
B)allotrope
C)precursor
D)peroxide
E)free radical
Q73: The noble gases were,until relatively recently,thought to
Q74: _ has been shown to form compounds
Q75: _ is credited with developing the concept
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