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M. Weil:
"Crystal Chemistry of Zinc, Cadmium and Mercury";
MDPI Books, Basel, 2019, ISBN: 978-3-03897-652-3; 156 pages.

The closed-shell nd10(n+1)s2 (n = 3,4,5) electronic configuration of group 12 elements (zinc,
cadmium, mercury) defines their respective physical and chemical behaviours. Hence, for some
properties, zinc and cadmium compounds resemble their alkaline earth congeners (likewise with
closed-shell configurations) rather than their transition metal relatives, whereas mercury and its
compounds are unique among all metals, which, to a certain extent, can be attributed to relativistic
effects. All these features are also reflected in the characteristic crystal chemistry of the zinc
triad elements and their compounds, including simple inorganic salts, alloys, compounds with
inorganic framework structures, compounds with molecular structures or coordination polymers and
hybrid compounds.

http://dx.doi.org/10.3390/books978-3-03897-653-0