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Basic oxides are formed by metals, especially on the left side of the periodic table. K (group 1) forms K₂O, a basic oxide, while C, S, and P form acidic or amphoteric oxides.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Modern Periodic Law and Present Form - Long Form Periodic Table
Group 2 nitrates decompose to basic oxides, NO₂, and O₂. Be(NO₃)2 decomposes most readily to BeO (basic) due to Be²⁺’s small size and high charge density, which weakens the nitrate lattice.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Genesis of Periodic Classification - Dobereiner Newlands Mendeleev
Basic oxides are formed by metals, especially s-block elements. BaO (group 2) is basic, unlike N₂O₅ (acidic), SiO₂ (acidic), or Al₂O₃ (amphoteric).
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Anomalous Properties and Second Period and Chemical Reactivity
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