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Negatively charged particle with spin 1/2. A component of mundane terrestrial matter, and part of all neutral atoms and molecules. It has a mass about 1/1800 that of a proton. Its antiparticle is the positron.

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how can $r=\frac{1}{n^{\frac13}}$ be used to calculate the mean separation between electrons?

Can $r=\frac{1}{n^{\frac13}}$ be used to calculate mean separation of electrons suppose that Na which has BCC crystalline structure, each atom donate 1 electron to form metallic bonding As it's BCC then …
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