Paper: CSIR-NET June 2019 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Easy
Choose the correct statement(s) among the following (1) The dihedral angle in $\mathrm{O_2F_2}$ is $0^{\circ}$. (II) $\mathrm{OF_2}$ is generally prepared by reacting fluorine gas with dilute (2\%) aq. NaOH solution (III) $\mathrm{O_2F_2}$ can be readily reduced by $\mathrm{H_2S}$.
(a)I and II only
(b)I, II and III
(c)II and III only
(d)II only
Answer
Answer: C ✓ checked by 4AB · confidence medium
Explanation
OF₂ is made from F₂ and 2 % aqueous NaOH. O₂F₂ is a strong fluorinating oxidant that H₂S readily reduces. The F–O–O–F dihedral is about 87°, not 0°. II and III (c).