question_answer

Which of the following is not correct?

A)  \[\text{Xe}{{\text{O}}_{\text{3}}}\]has four \[\sigma \] and four \[\pi \] bonds

B)  The hybridisation of Xe in \[\text{Xe}{{\text{F}}_{\text{4}}}\]is \[\text{s}{{\text{p}}^{3}}{{d}^{2}}\]

C)  Among noble gases, the occurrence (percent by weight) of argon is highest in air

D)  Liquid helium is used as cryogenic liquid

Correct Answer: A

Solution :

                 \[\text{Xe}{{\text{O}}_{\text{3}}}\]has following structure: no. of \[\sigma -\]bonds = 3 no. of \[\pi -\]bonds =3