Sure, let’s examine each of the compounds to determine which of them are ionic.
1. CaCl₂ (Calcium Chloride):
- Calcium (Ca) is a metal.
- Chlorine (Cl) is a non-metal.
- Compounds formed between metals and non-metals are generally considered ionic.
- Conclusion: [tex]\(CaCl _2 \)[/tex] is an ionic compound.
2. C₆H₁₂O₆ (Glucose):
- This compound consists of carbon (C), hydrogen (H), and oxygen (O), all of which are non-metals.
- Compounds formed only between non-metals are generally considered covalent.
- Conclusion: [tex]\(C _6 H _{12} O _6 \)[/tex] is not an ionic compound.
3. MgO (Magnesium Oxide):
- Magnesium (Mg) is a metal.
- Oxygen (O) is a non-metal.
- Compounds formed between metals and non-metals are generally considered ionic.
- Conclusion: MgO is an ionic compound.
4. Na₂O (Sodium Oxide):
- Sodium (Na) is a metal.
- Oxygen (O) is a non-metal.
- Compounds formed between metals and non-metals are generally considered ionic.
- Conclusion: [tex]\(Na _2 O \)[/tex] is an ionic compound.
5. SiO₂ (Silicon Dioxide):
- Silicon (Si) is a semi-metal (metalloid).
- Oxygen (O) is a non-metal.
- Compounds formed between semi-metals and non-metals are generally considered covalent.
- Conclusion: [tex]\(SiO _2 \)[/tex] is not an ionic compound.
Overall Conclusion:
The ionic compounds among the given compounds are:
- [tex]\(CaCl _2\)[/tex]
- MgO
- [tex]\(Na _2 O\)[/tex]
Hence the indices of the ionic compounds are:
[tex]\[ \boxed{0, 2, 3} \][/tex]
