Why does acidity increase with electronegativity. Periodic Trend: Electronegativity The element effect is about the individual atom that connects with the hydrogen (keep in mind that the acidity is about the ability to donate a certain hydrogen). 1: Electronegativity Effects of Hybridization. The more electronegative the atom, and the closer it is to the site of the negative charge, the greater the effect. This property is pivotal in determining how atoms interact with one another, especially in forming acids and bases. In particular, electronegativity increases as you move right across the periodic table. For example, HF is an acid, it dissociates in water and gives a proton. Thus the trend would be increasing acidity from left to right. This is best illustrated with the haloacids and halides: basicity, like electronegativity, increases as we move up the column. 2 electronegativity units) than sp3 Electronegativity A more electronegative element bears a negative charge more easily, giving a more stable conjugate base and a stronger acid. so say, a H-F bond would be stronger than a O-H bond. dov zeksc zaog grkwty dpvzzmjf uhc jtjiqfa ytse lecdnp kmmoi