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The imidazole nitrogen of a histidine side-chain is a common ligand. The following are typical examples of the two kinds of zinc-protein complexes. In the active site of resting carbonic anhydrase a zinc ion is coordinated by three histidine residues. The fourth position is occupied by a water molecule, which is strongly polarized as in ...
Roughly one quarter of all zinc output in the United States (2009) is consumed in the form of zinc compounds, a variety of which are used industrially. [ 92 ] Cadmium has many common industrial uses as it is a key component in battery production, is present in cadmium pigments , [ 102 ] coatings, [ 90 ] and is commonly used in electroplating ...
Many zinc compounds are markedly covalent in character. [56] The oxide and hydroxide of zinc in its preferred oxidation state of +2, namely ZnO and Zn(OH) 2, are amphoteric; [57] it forms anionic zincates in strongly basic solutions. [58] Zinc forms Zintl phases such as LiZn, NaZn 13 and BaZn 13. [59] Highly purified zinc, at room temperature ...
There is no general variation in atomicity. It depends on the type of bonding the atom makes with itself to form the molecule of that particular element. The most common values of atomicity for the first 30 elements in the periodic table are as follows:
Zinc hydroxide Zn 2 is an inorganic chemical compound. It also occurs naturally as 3 rare minerals: wülfingite (orthorhombic), ashoverite and sweetite (both tetragonal). Like the hydroxides of other metals, such as lead , aluminium , beryllium , tin and chromium , Zinc hydroxide (and Zinc oxide ), is amphoteric .
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
Consequently some of the equivalent salts have the same crystal structure, [57] and in other circumstances where ionic radius is a determining factor, the chemistry of zinc has much in common with that of magnesium. [51] Compared to the transition metals, zinc tends to form bonds with a greater degree of covalency.
Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al 3+ is small and highly charged; as such, it has more polarizing power, and bonds formed by aluminium have a more covalent character. The strong affinity of ...