Question

What different types of bonds are formed by chlorine with oxygen in perchloric acid?

• A. 2-single bonds and 2-double bonds
• B. 3-single bonds and 1-double bond
• C. 2-single bonds and 3-double bonds
• D. 1-single bond and 3-double bonds

Hint:

Draw the structure of perchloric acid and count the Cl-O single and double bonds.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept
Perchloric acid is \(\text{HClO}_4\), in which chlorine is in the +7 oxidation state.

Step 2: Structure
The structure is \(\text{O}{=}\text{Cl}({=}\text{O})({=}\text{O})\text{-OH}\).
Chlorine is bonded to three terminal oxygen atoms by double bonds and to one OH group by a single bond.

Step 3: Compare the options
Chlorine forms 1 single bond and 3 double bonds with oxygen, the fourth option.

Final Answer:
Chlorine forms one single bond and three double bonds with oxygen. \[ \boxed{\text{(D) }\text{1-single bond and 3-double bonds}} \]