Question

Which of the following molecule doesn't involve covalent bond?

• A. H\(_2\)O
• B. CCl\(_4\)
• C. NaCl
• D. O\(_2\)

Hint:

Ionic compounds, like \( \text{NaCl} \), involve the transfer of electrons, whereas covalent compounds involve the sharing of electrons.

Answer 1

The Correct Option is C

Step 1: Understanding Covalent Bonds
Covalent bonds are formed when two atoms share electrons.
These bonds typically form between non-metals.
Step 2: Analyzing the Molecules
\( \text{H}_2\text{O} \) (Water) has covalent bonds between hydrogen and oxygen atoms.

\( \text{CCl}_4 \) (Carbon tetrachloride) involves covalent bonding between carbon and chlorine atoms.

\( \text{NaCl} \) (Sodium chloride) forms an ionic bond, not a covalent bond, as it involves the transfer of an electron from sodium (metal) to chlorine (non-metal).

\( \text{O}_2 \) (Oxygen) has a covalent bond between two oxygen atoms.
Step 3: Conclusion Thus, \( \text{NaCl} \) does not involve a covalent bond, as it is an ionic compound.