JEE Main 2023 — D And F Block Elements Question with Solution

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : $$\mathrm{C}{\mathrm{u}}^{2+}$$ in water is more stable than $$\mathrm{C}{\mathrm{u}}^{+}$$.

Reason (R) : Enthalpy of hydration for $$\mathrm{C}{\mathrm{u}}^{2+}$$ is much less than that of $$\mathrm{C}{\mathrm{u}}^{+}$$.

In the light of the above statements, choose the correct answer from the options given below :