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2 January, 19:24

Estimate the volume, v, of one sodium atom (na) using its metallic radius of 186 pm. express your answer with the appropriate units.

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  1. 2 January, 20:34
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    2.70x10^7 pm^3 We will assume that the sodium atom closely approximates a sphere. So the expression for the volume of a sphere is V = 4/3 pi r^3 V = 4/3 pi (186 pm) ^3 V = 4/3 pi 6434856 pm^3 V = 26954261.78 pm^3 Round to 3 significant figures, giving 2.70x10^7 pm^3
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