Chemical bond and energy

This subject gives some information of module 7 about chemical reactions, but I believe it is useful and right to ask some attention for it now.

The chemical bond always has to do with valency electrons.
These valency electrons like to connect because they have much energy, and that's how they rearrange to become more stable.
The formation of bonds mostly is exothermic (see module 7).

Below you find a table with bond formation energies.

At each of the bonds, the bond formation energy is given in kJ/mol.
If that is a high value, then the formation of this bond out of the elements seems to deliver lots of energy.

Example:
If you connect to mol of H-atoms, making 1 mol of H-H bonds, you gain 436 kJ of energy.

Bond formation energy
    x 100 kJ/mol

H-H

 - 4.36

H-F

 - 5.63

N≡N

 - 9.45

C-F

 - 4.4

F-F

 - 1.53

H-Cl

 - 4.32

C≡C

 - 8.3

C-Cl

 - 3.3

Cl-Cl

 - 2.43

H-Br

 - 3.66

C≡N

 - 8.9

C-Br

 - 2.8

Br-Br

 - 1.93

H-I

 - 2.99

C=O

 - 8.0

C-I

 - 2.4

I-I

 - 1.51

H-O

 - 4.646

C=S

 - 2.6

C-O

 - 3.5

H-O (alkanol)

 - 4.5

N-H

 - 3.9

C=C

 - 6.1

H-S

 - 3.44

C-C

 - 3.5

C-H

 - 4.1

O=O

 - 4.98

P-H

 - 3.22