Vanadium atomic radius

Valence, 286 Valence electrons, 269 and ionization energies, 269 Vanadium atomic radius, 399 eleciron configuration, 389 oxidation numbers, 391 pentoxide catalyst, 227 properties, 400, 401 van der Waals forces, 301 elements that form molecular crystals using, 301 and molecular shape, 307 and molecular size, 307 and molecular substances, 306 and number of electrons, 306 van der Waals radius, 354 halogens, 354 Vanillin, 345... 

Vanadium crystallizes with a body-centered cubic unit cell. The volume of the unit cell is 0.0278 nm3. What is its atomic radius ... 

Identify the element with the larger atomic radius in each of the following pairs (a) vanadium and titanium (b) silver and gold (c) vanadium and tantalum (d) rhodium and iridium. 

Arrange the elements in the following sets in order of decreasing atomic radius (a) lithium, carbon, fluorine (b) scandium, vanadium, iron (c) iron, ruthenium, osmium (d) iodine, bromine, chlorine. 

Calculate the atomic radius of the following elements from the data given (a) gold (fee structure, density 19.3 g-cm-3) (b) vanadium (bcc structure, density 6.11 g-cm-3). 

A similar phenomenon has been observed by the author and Sokolova, 189) for the catalysis of alcohols on pentoxides of vanadium, niobium and tantalum. The increase of dehydration as against dehydrogenation goes on simultaneously with the increase of the atomic radius in the series vanadium (1.36 A) niobium (1.47 A) tantalum (1.49 A.)... 

For an interstitial alloy to form, the solute atoms must have a much smaller bonding atomic radius than the solvent atoms. Typically, the interstitial element is a nonmetal that makes covalent bonds to the neighboring metal atoms. The presence of the extra bonds provided by the interstitial component causes the metal lattice to become harder, stronger, and less ductile. For example, steel, which is much harder and stronger than pure iron, is an alloy of iron that contains up to 3% carbon. Other elements may be added to form alloy steels. Vanadium and chromium may be added to impart strength, for instance, and to increase resistance to fatigue and corrosion. 

Owing to its smaller atomic radius, vanadium does not form dimers. 

Explain why vanadium (radius = 134 pm) and copper (radius = 128 pm) have nearly identical atomic radii, even though the atomic number of copper is about 25% higher than that of vanadium. What would you predict about the relative densities of these two metals Look up the densities in a reference book, periodic table, or on the Web. Are your predictions correct ... 

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