A) \[As\text{ }{{H}_{3}}>N{{H}_{3}}:\]Enthalpy of vaporization
B) \[{{S}_{8}}>{{P}_{4}};\] Percentage of p-character in hybrid orbitals forming \[X-X\] bonds. (\[X-X\]bond represents \[P-P\] and \[S-S\] bonds).
C) \[C{{H}_{3}}C\equiv CC{{H}_{3}}<C{{H}_{3}}C{{H}_{2}}C=CH:\] Dipole moment.
D) \[{{C}_{2}}^{2-}<{{N}_{2}};\] Numb® of n bands.
Correct Answer: C
Solution :
In But-2-yne vectors cancels each other so \[\mu =0\] while But-1 -yne has some dipole moment. Let total pressure at eq. = P.
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