All questions of Language Of Chemistry for Class 9 Exam
Understanding Tetratomic Molecules
Tetratomic molecules are composed of four atoms bonded together. The question asks for an example of such a molecule from the given options.
Options Analysis
- Helium (He)
- This is a monatomic molecule consisting of a single atom.
- Therefore, it does not qualify as a tetratomic molecule.
- Phosphorus (P4)
- Phosphorus exists as a tetraatomic molecule in its most common form, which consists of four phosphorus atoms bonded together.
- This makes it the correct answer as it meets the criteria of a tetratomic molecule.
- Oxygen (O2)
- Oxygen is a diatomic molecule, consisting of two oxygen atoms.
- It does not fit the definition of a tetratomic molecule.
- Nitrogen (N2)
- Similar to oxygen, nitrogen is also a diatomic molecule made up of two nitrogen atoms.
- Hence, it is not tetratomic.
Conclusion
Among the options provided, phosphorus (P4) is the only molecule that consists of four atoms, making it a tetratomic molecule. The other options either consist of one or two atoms, disqualifying them from being classified as tetratomic. Thus, the correct answer is indeed option 'B'.