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The metallic radius of a sodium atom is 186 pm. What is the volume of a sodium atom in cubic meters? Assume the atom is a perfect sphere. The volume of a sphere is calculated from (4/3)π×r3

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The volume of the sodium atom is 2.7 * 10^-29 cubic meters

What is the volume of the sodium atom?

Let us recall that the volume is the an atom could be approximated to be the same as the volume of a sphere where the atom has been taken  to be a sphere.

We know that volume of a sphere = (4/3)π×r3 where r = radius of the sphere. Having known that we convert the radium into meters and we have 186 * 10^-12 m

Thus;

Volume = 4/3 * 3.142 * ( 186 * 10^-12)^3

Volume = 2.7 * 10^-29 cubic meters

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