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  • Electronegativity Difference Hydrogen Chlorine

Electronegativity Difference Hydrogen Chlorine

The difference in the electronegativity of hydrogen and chlorine is related to the chemical relationship between the two. For hydrogen, the electronegativity value is about 2.20; for chlorine, the electronegativity value is about 3.16. The difference between the two is calculated by the electronegativity of chlorine minus the electronegativity of hydrogen, that is, 3.16 - 2.20 = 0.96.

This difference shows the characteristics of its bond. If the difference is small, it is mostly a covalent bond; if it is large, it is biased towards an ionic bond. The difference between hydrogen and chlorine is 0.96, which belongs to the category of covalent bonds. However, due to the large electronegativity of chlorine, the electron cloud is biased towards chlorine, making this covalent bond polar.

In many reactions, this electronegativity difference affects its reactivity and mode. For example, in the reaction involving hydrogen and chlorine, due to the difference in electronegativity, chlorine has a strong ability to attract electrons, and is often an absorber of electrons in the reaction. Hydrogen is easy to lose electrons. The two combine to form hydrogen chloride, and their intramolecular bonds have polar characteristics, which affect the physical and chemical properties of hydrogen chloride. The solubility and chemical stability in water are all related to it.