Bonding atomic radius

C — S bond length = bonding atomic radius of C -t- bonding atomic radius of S... 

Within each group, bonding atomic radius tends to increase from top to bottom. This trend results primarily from the increase in the principal quantum number (n) of the outer electrons. As we go down a column, the outer electrons have a greater probability of being farther from the nucleus, causing the atomic radius to increase. 

Which element has the largest bonding atomic radius Sc, Fe, or Au ... 

By referring to the periodic table, but not to Figure 7.7, place the following atoms in order of increasing bonding atomic radius N,... 

SIZES OF ATOMS AND IONS (SECTION 7.3) The size of an atom can be gauged by its bonding atomic radius, which is based on measurements of the distances separating atoms in their chemical compounds. In general, atomic radii increase as we go down a colrnnn in the periodic table and decrease as we proceed left to right across a row. 

In Table 7.8, the bonding atomic radius of neon is Usted as 0.58 A, whereas that for xenon is listed as 1.40 A. A classmate of yours states that the value for Xe is more reaUstic than the one for Ne. Is she correct If so, what is the basis for her statement ... 

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. 

Scientists have developed a variety of methods for measuring the distances separating nuclei in molecules. From observations of these distances in many molecules, each element can be assigned a bonding atomic radius. For example, in the I2 molecule, the distance separating the iodine nuclei is observed to be 2.66 A. We can define the bonding atomic radius of iodine on this basis to... 

A Figure 7.4 Illustration of the distinction between nonbonding and bonding atomic radius. Values of bonding atomic radii are obtained from measurements of interatomic distances in chemical compounds. 

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