7. Which group of elements does not have metallic properties? alkali metals
alkaline earth elements
o noble gases
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Typically non-metals are not able to conduct electricity or heat very well and are often gases, such as oxygen, or solids, like carbon. Therefore, non-metals are the elements in groups 14-16 of the periodic table.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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