Consider the following reactions:
i. ${\mathrm{NH}}_4\mathrm{Cl}\underset{∆}{\overset{\mathrm{NaOH}}{\to }}$ product (containing nitrogen)
ii. ${\mathrm{PH}}_4\mathrm{l}\underset{∆}{\overset{\mathrm{NaOH}}{\to }}$ product (containing phosphorus)
iii. ${\mathrm{P}}_4\underset{∆}{\overset{\mathrm{NaOH}}{\to }}$ product (containing phosphorus in negative oxidation state)
The order of change in bond angle (for reactant → specified product) is: