All Students Notes

Question 1. Although, Na and P are present in the same period yet their oxides are different in nature. Na2O is basic while P2O5 is acidic why? Answer. Na2O oxide is basic in nature because it reacts with dilute acids to form salt and water. Na2O also reacts with water to form NaOH which is alkaline in nature as it can release OH- in the solution. On the other hand, P2O5 is acidic in nature because it reacts with water to form H3PO3, which is acidic in nature as it can release H+ in the solution. Question 2. How acidic basic amphoteric behavior of oxides is explained? Answer. Generally, acidic or basic or amphoteric behavior of oxides is determined through the electropositive character of the oxide's central atom. If the central atom is more electropositive, the oxide is more basic . On the hand, if the central atom is more electronegative, the oxide is more acidic. Electropositive character decreases from left to right in periodic table and increases down the c...