Observe the following reactions. Identify the reaction in which the hybridisation of underlined atom is…

Observe the following reactions. Identify the reaction in which the hybridisation of underlined atom is changed
  1. $\mathrm{NH}_3+\mathrm{H}^{+} \rightarrow \mathrm{NH}_4^{+}$
  2. $\mathrm{PCl}_3+3 \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{H}_3 \underline{\mathrm{PO}}_3+3 \mathrm{HCl}$
  3. $\mathrm{NaNO}_3+\mathrm{H}_2 \mathrm{SO}_4 \rightarrow \mathrm{NaHSO}_4+\mathrm{HNO}_3^{\prime}$
  4. $\mathrm{XeF}_6+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{XeOF}_4+2 \mathrm{HF}$

Asked in: AP EAMCET 2024 (20 May Shift 2)

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