Talk:Isotopes of scandium

coincidence -- first non-valence (3d) electrons, first neutron-heavy nuclei ??
Calcium-40 is the most massive nucleus to remain stable with equal numbers of protons & neutrons. All heavier nuclei "prefer" excess neutrons. And, all heavier nuclei-cum-atoms "stick" electrons into interior, non-valence (d,f) orbitals. Is that coincidence, between the physics occurring within the nucleus, and between the same and surrounding electrons, significant ? 66.235.38.214 (talk) 05:24, 17 October 2012 (UTC)

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