Based on the information in the table which two elements are most likely in the same group and why

Carbon and Germanium are likely together in another group because they have the same number of valence electrons.  Valance electrons determine a lot.  

Explanation:

Can't really explain, just that valence electrons can determine a lot on which elements are similar, what the structure is on an element/chemical bonds, and  which elements it bonds with.

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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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