Table 2. Calculated Atoms A₁^El and Bond-Strain Contributions B₂^El–El, B₂^C–El, B₂^Si–El, and B₂^Ge–El (kcal/mol) to RSE^ad.

El	A1El	B2El–El	B2C–El	B2Si–El	B2Ge–El
Al	19.87		17.76	13.07	13.57
Ga	21.37		17.61	14.34	14.87
C	8.31	8.48	8.48	13.71	13.93
Si	12.21	12.07	13.71	12.07	12.52
Ge	12.85	12.89	13.93	12.52	12.89
N	8.54	4.55	8.99	18.52	16.60
P	2.29	1.93	5.55	7.54	8.21
As	1.90	1.93	4.97	6.95	7.55
Sb	1.52	2.05	4.45	6.08	6.66
Bi	0.91	2.32	2.94	5.05	5.59
O	9.54	9.15	7.58	12.32	13.19
S	6.99	9.61	4.79	6.42	7.53
Se	6.03	8.71	4.45	5.81	6.75
Te	6.09	9.18	4.15	5.34	6.27
Po	5.44	8.77	3.46	4.89	5.69