Question

3. Carbon dioxide, hydrogen sulphide, calcium chloride and sodium oxide are examples of (a) triatomic molecules (b) triatomic and tetra-atomic molecules (c) diatomic and triatomic molecules (d) tetra-atomic molecules

Answer 1

Answer:

carbon dioxide, hydrogen sulphide,calcium chloride and sodium oxide are (c)

Answer 2

Carbon dioxide, hydrogen sulfide, calcium chloride, and sodium oxide are examples of (a) triatomic molecules.

• A molecule can be classified as monoatomic, diatomic, triatomic, etc. depending on the number of atoms present in 1 molecule of the substance.
• Substances like helium and neon exist as monoatomic gases since they have a single atom in their molecular formula i.e. He and Ne respectively.
• Di and tetra atomic molecules like H₂ and PCl₃ have 2 and 4 atoms respectively.
• Carbon dioxide (CO₂), hydrogen sulfide (H₂S), calcium chloride (CaCl₂), and sodium oxide (Na₂O) are all triatomic molecules because of the presence of 3 atoms in each molecule.