Halogen compounds characteristic chemical properties

Like all the other transition elements, molybdenum is a metal, and it is widely used as an alloying element and as a metallic coating. Some of its physical properties are listed in Table 3.2. In chemical reactions it shows little tendency to form cations, which is usuaily a characteristic of metals. In fact its sait-forming properties resembie those of non-metals, in that it has the ability to form salts (molybdates, sulphomolybdates, etc) or other complex compounds with another metal and a non-metal such as oxygen, sulphur or a halogen. The chemistry of molybdenum is very... 

One of the characteristic properties of organometallic reagents 1 is that the carbon atom serves as a nucleophile in chemical reactions. In contrast, when a carbon atom is bonded to more electronegative elements such as the halogen atom in the alkyl halide 2 (X = Cl, Br, or I) or oxygen atom in the carbonyl compound 3, it is electron-deficient or Lewis acidic and possesses a partial positive charge. Such carbon atoms then serve as electrophiles in chemical reactions. 

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