Match the oxide given in Column-I with its property given in Column-II:

**Column-I**
(i) $Na_2O$
(ii) $Al_2O_

Question

Match the oxide given in Column-I with its property given in Column-II:

**Column-I**
(i) $Na_2O$
(ii) $Al_2O_3$
(iii) $N_2O$
(iv) $Cl_2O_7$

**Column-II**
(a) Neutral
(b) Basic
(c) Acidic
(d) Amphoteric

Which of the following options is correct?

Accepted Answer

1. **Analyze $Na_2O$ (Sodium Oxide):** Sodium is a Group 1 alkali metal. Metallic oxides are generally **Basic**. It reacts with water to form NaOH.
   - Matching: (i) $\rightarrow$ (b)
2. **Analyze $Al_2O_3$ (Aluminium Oxide):** Aluminium oxide shows properties of both acids and bases (reacts with HCl and NaOH). It is a classic **Amphoteric** oxide.
   - Matching: (ii) $\rightarrow$ (d)
3. **Analyze $N_2O$ (Nitrous Oxide):** Non-metallic oxides are usually acidic, but $N_2O$, NO, and CO are exceptions known as **Neutral** oxides.
   - Matching: (iii) $\rightarrow$ (a)
4. **Analyze $Cl_2O_7$ (Dichlorine Heptoxide):** Chlorine is a non-metal (Group 17). Oxides of non-metals with high oxidation states (+7 here) are strongly **Acidic** (anhydride of Perchloric acid, $HClO_4$).
   - Matching: (iv) $\rightarrow$ (c)
5. **Conclusion:** The correct sequence is (i)-(b), (ii)-(d), (iii)-(a), (iv)-(c).

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