‹ Back to the paper
Answer the following.
Account for the following/Explain why: (1) Interhalogens are more reactive than halogens. (2) is…
(i)[3.0]
Account for the following/Explain why:
(1) Interhalogens are more reactive than halogens.
(2) $\text{N}_2$ is less reactive at room temperature.
(3) Reducing character increases from $\text{NH}_3$ to $\text{BiH}_3$.
(ii)[2.0]
Draw structures of the following:
(1) $\text{H}_4\text{P}_2\text{O}_7$
(2) $\text{XeF}_4$
Draw: structures of H4P2O7 and XeF4
Must show: structure of H4P2O7, square planar structure of XeF4
Answer
Answer (i)
AI1. Because the X-X' bond in interhalogens is weaker than the X-X bond in halogens (except F-F), they are more reactive.
2. Because of the very high bond dissociation enthalpy of the $\mathrm{N \equiv N}$ triple bond, $\mathrm{N_2}$ is inert at room temperature.
3. Because the M-H bond becomes weaker down the group as the size of the element increases, the ease of giving up hydrogen (reducing character) increases from $\mathrm{NH_3}$ to $\mathrm{BiH_3}$.
From ISC 2018 Specimen Chemistry Paper 1, question 17(a).