Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : H 2 Te is more acidic than H 2 S . Reason R: Bond dissociation enthalpy of H 2 Te is lower than H 2 S . In the light of the above statements. Choose the most appropriate from the options given below.

Step-by-step solution

Bond enthalpy, also referred to as bond energy or bond dissociation energy, is the energy required to break a particular covalent bond in one mole of molecule in a gaseous state. The bond dissociation enthalpy of H 2 Te is lower than that of H 2 S . As a result, less energy is required to break the H 2 Te bond, releasing H + is easier, and the acidity of H 2 Te is greater. H 2 S , on the other hand, has a high bond dissociation energy and so has lower acidity. Hence, Both A and R are true and R is the correct expla