Order of bond strength

When i and are both heteroatoms, we can take / I( = h h) p. The recommended values for X = O, N, F, Cl, Br and Me are given in Table 2.2. The exact numerical values of these parameters are not crucially important but it is essential that values of appear in the correct order of electronegativity and / I( in the correct order of bond strength.14... 

Almost all elements form thermodynamically stable halides. The normal stability sequence is F > Cl > Br >1, which in covalent compounds follows the expected order of bond strengths, and in ionic compounds that of the lattice energies. The thermodynamic stability of fluorides (and the kinetic reactivity of F2) is... 

Acid strengths for other vertical series of binary acids vary in the same way as those of the VIIA elements. The order of bond strengths for the VIA hydrides is... 

H—O bonds are much stronger than the bonds in the other Group VT hydrides. As we might expect, the order of acid strengths for these hydrides is just the reverse of the order of bond strengths. 

The differences between the reactions (P8.22.1) and (P8.22.2) are explained by the order of bond strengths B—F > B—O > B—Cl. Thus, chloride ion easily transfers from the counterion to terminate the propagating center, while fluoride ion is inactive toward transfer. 

III) Double and triple bonds are stronger than single bonds. The general order of bond strength Is triple bonds > double bonds > single bonds. 

Mucilage—An adhesive prepared from a gum and water. Also, in a more general sense, ahquid adhesive which has a low order of bonding strength. Mucil-ages are used in schools and offices for appUcations usually involving paper products. 

We can use these peaks in interpreting IR spectra because the exact location of the peak depends on the strength (and stiffness) of the C — H bond, which in turn depends on the hybridization state of the carbon that bears the hydrogen. The C — H bonds involving /-hybridized carbon are strongest and those involving j/ -hybridized carbon are weakest. The order of bond strength is... 

The general order of bond strength for ligands bound to metal carbonyl compounds is M-PMe > M-P(OMe)j >... 

---