Achemical reaction takes place in which energy is absorbed arrange the characteristics of the reaction in order from start to finish

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

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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