December 2011
Beginner
560 pages
12h 42m
English
Content preview from Basic Concepts of Inorganic Chemistry, 2nd Edition
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13
Group 12 (II B) - Zinc, Cadmium, Mercury
Zinc (Zn), cadmium (Cd) and mercury (Hg) are last d-elements in their periods. Their outer electron configuration is (n — 1)d10ns2. They form +2 ions only (M+2 ions) which have configuration (n — 1)d10. As the elements or the ions they form have full filled (n — 1)d orbitals, they are not true transition elements. However, they form a group of their own and are placed with transition metals. There is some similarity to transition metals w.r.t. complex formation especially with NH3, CN−, halide ions and amines.
Electronic configuration
Table 13.1
Mercury is unique. It is the only metal which is liquid ...
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