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Tag: how

chemistry 0

Why the electron affinity or electron gain enthalpy of Chlorine is higher than Fluorine ? Even if Fluorine is most electronegative element.

Even if the Fluorine is most electronegative element still its electron gain enthalpy is lower than Chlorine. In case of Fluorine the size of valence shell is so small that the upcoming electron experiences repulsions so it is not practically easy for Fluorine to gain an electron as compared to Chlorine. On other hand in case 9f Chlorine the outer […]

chemistry 0

Why sigma bond is stronger than pi bond?

Actually the sigma bond involves head to head overlapping of orbitals, due to which the overlapping takes place on a larger extent. That makes the bond more stronger as compared to pie bond. In pie bond there is a sidewise overlapping of orbitals which leads to lesser extent of overlapping and thus the bond formed is not so strong as […]

chemistry 0

What are the factors that affect Vapour Pressure?

1.Temperature :- With increase in temperature the rate of vaporization also increase thus it creates more pressure. Moreover with increase in temperature the kinetic energy of the vapours also increase. 2. Nature of liquid:- The liquids with lower inter-particulate attractions have high vapour pressure as the formation of vapours is easy . Like acetone is easily vaporized as compared to […]