Explanation:
<em><u>SO2 + 2NaOH → Na2SO3 + H2O</u></em>
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Metallic solids or metallic structures experience metallic bonds which are the forces of attractions between the sea of electrons and the nucleus of the metallic atoms. They share a network of highly delocalized electrons.
I therefore think that the packing efficiency decreases as the number of nearest neighbors decreases.
The correct answer would be C.) Length