1. So let's think about methane using valence bond theory.

2. A practical valence bond method, called VB-MP2, is presented.

3. In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.

4. Based on the valence bond theory , a general molecular formula for organic com- pounds is derived.

5. So why don't you tell me what the valence bond description would be of these carbon hydrogen bonds?

6. In the valence bond treatment , explicit recourse is made to classical, localized bond structure.

7. Valence Bond Theory in chemistry teaching of university was not only the focal point, but also the difficulties.

8. So the idea behind valence bond theory is very easy to understand.

9. In the preceding section we discussed the valence bond ( VB ) or electron - pair theory of bonding.

10. And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.

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11. So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.

12. All right, so that's really all there is to thinking about valence bond theory in terms of the most simple explanation here.

13. Valence - bond theory was formed on the basis of the classical ideas of valence bond.

14. valence-bond theory was formed on the basis of the classical ideas of valence bond.

15. The following teaching strategies were described. Using History of Chemistry, the importance of valence bond theory was stressed.

16. In the present paper a brief review is given to some important approaches of modern valence bond theory.

17. Theory of hybrid atomic orbital is part of modern valence bond theory and a difficult point in inorganic chemistry teaching.

18. So, we can think about now how do we describe this bond in valence bond theory.

19. Changes of the nonlinear polarizability of the molecular layers can be explained by using the theory of atom-radical and valence bond.

20. The physical model for anodic bonding is constructed base on valence bond theory, and the essence relationship between bond result and circuit character is obtained.