Molecular formula :
nature : that the bond strength. Bond described a variety of physical strength as bond energy, bond dissociation energy level and so on bond. Keys will be released by the chemical bond formation of the chemical bond energy fracture or by absorption of energy, which implies different elements in the same type of chemical bond in the same key can be assumed. While bond dissociation energy fracture is a designated chemical bond energy needs. In addition diatomic molecules, the bond dissociation energy can be different from the keys.
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