Assertion: Acidic character of group 16 hydrides increases from H2O to H2Te. Reason: Thermal stablility of hydrides decreases down the group.

Question

Assertion: Acidic character of group 16 hydrides increases from H2O to H2Te. Reason: Thermal stablility of hydrides decreases down the group. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

The acidic character increases down the group and thermal stability of hydrides decreases down the group due to decrease in bond (H—E) dissociation enthalpy down the group.

Q. Assertion : Acidic character of group $16$ hydrides increases from $H_{2} O$ to $H_{2} T e$ .
Reason : Thermal stablility of hydrides decreases down the group.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

The acidic character increases down the group and thermal stability of hydrides decreases down the group due to decrease in bond $(H — E)$ dissociation enthalpy down the group.

Q. Assertion : Acidic character of group 16 hydrides increases from H2​O to H2​Te. Reason : Thermal stablility of hydrides decreases down the group.