Question

Which of the statements given below is incorrect ?

• A. ONF is isoelectronic with $O_2 N^-$
• B. $OF_2$ is an oxide of fluorine
• C. $Cl_2O_7$ is an anhydride of perchloric acid
• D. $O_3$ molecule is bent

Answer 1

The Correct Option is B

To identify the incorrect statement, we need to analyze each given option in the context of chemical properties and molecular structure:

1. ONF is isoelectronic with O_2 N^−:

   Isoelectronic species have the same number of electrons. ONF and O_2 N^− both have 24 electrons. Thus, they are isoelectronic.

2. OF_2 is an oxide of fluorine:

   This statement is incorrect. OF_2 is fluorine's oxide, but in chemistry, the compound is often referred to as an oxide of oxygen since oxygen is more electronegative in comparison to fluorine. Therefore, it is more typical to call OF_2 a fluoride of oxygen, rather than an oxide of fluorine.

3. Cl_2O_7 is an anhydride of perchloric acid:

   This is correct. Cl_2O_7 is known as dichlorine heptoxide, and it is the anhydride form of perchloric acid HClO_4.

4. O_3 molecule is bent:

   The structure of ozone O_3 is indeed bent. The O-O-O bond angle is about 116.8 degrees, and it has a bent molecular geometry.

Upon evaluating all the statements, it is clear that the incorrect statement is "OF_2 is an oxide of fluorine."