Many metals and noble gases, which are monoatomic, form crystals with hcp and fcc structures. For example, magnesium, titanium, and zinc crystallize with their atoms in an hcp array, while aluminum nickel, and silver crystallize in fcc arrangement. All noble gases have the fcc structure except helium, which crystallizes in the hcp structure.  On the other hand, other metals form bcc structure such as alkali metals and scc structure such as polonium. Which of the metals st

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Chapter1: Chemical Foundations
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Many metals and noble gases, which are monoatomic, form crystals with hcp and fcc structures. For example, magnesium, titanium, and zinc crystallize with their atoms in an hcp array, while aluminum nickel, and silver crystallize in fcc arrangement. All noble gases have the fcc structure except helium, which crystallizes in the hcp structure.  On the other hand, other metals form bcc structure such as alkali metals and scc structure such as polonium. Which of the metals stated contain 2 atoms and have a coordination number of 8?

 

a. magnesium, titanium, zinc and helium
b. aluminum, nickel, silver and all noble gases except He
c. alkali metals
d. polonium
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