(NEET 2019 pattern) Which of the following about resonance is INCORRECT?

**Assertion (A):** $O_{2}$ is paramagnetic. **Reason (R):** MOT predicts two unpaired electrons in the degenerate π*2p orbitals of $O_{2}$.

**Assertion (A):** AgI has more covalent character than AgF. **Reason (R):** $I^{-}$ is more polarisable than $F^{-}$ because $I^{-}$ is larger with a more diffuse electron cloud.

**Assertion (A):** The bond angle in $H_{2}O$ (104.5°) is less than in $NH_{3}$ (107°). **Reason (R):** $H_{2}O$ has two lone pairs while $NH_{3}$ has only one lone pair on the central atom, and lone pairs exert greater repulsion than bond pairs.

For the reaction: Ca(s) + $Cl_{2}$(g) → Ca$Cl_{2}$(s), the lattice energy of Ca$Cl_{2}$ is calculated to be −2258 kJ/mol. Given $\Delta H$_f = −795, $\Delta H$_sub(Ca) = +178, $IE_{1}$(Ca) = +590, $IE_{2}$(Ca) = +1145, $\Delta H$_diss($Cl_{2}$) = +243, EA(Cl) = −349 kJ/mol. Verify the lattice energy using the Born-Haber cycle.