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For each of the molecules or ions below, draw its Lewis structureand then answer

ID: 689277 • Letter: F

Question

For each of the molecules or ions below, draw its Lewis structureand then answer the question based on that structure. (The centralatom in each case is the atom with the lowestelectronegativity).

How many valence electrons are in the following? (Remember to addan electron for each negative charge or to subtract one for eachpositive charge).
6810121416182022242628323436384042444648 AsF5
6810121416182022242628323436384042444648 XeF4
6810121416182022242628323436384042444648 ClF3
How many lone pairs of electrons are on the central atom of thefollowing?
01234 SO3
01234 SF2
01234 CO32

Explanation / Answer

AsF5 - 40 valence electrons XeF4 - 36 valence electrons ClF3 - 28 valence electrons SO3 - zero lone pairs SF2 - 2 lone pairs CO3 2- - zero lone pairs

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