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Chemistry · Classification of Elements and Periodicity in Properties

हिन्दी

What is the formula of the highest oxide formed by Group 13 elements (boron family)?

  1. \( \text{B}_2\text{O}_3, \text{Al}_2\text{O}_3, \text{Ga}_2\text{O}_3, \text{In}_2\text{O}_3 \)
  2. \( \text{Li}_2\text{O}, \text{Na}_2\text{O}, \text{K}_2\text{O} \)
  3. \( \text{CO}_2, \text{SiO}_2, \text{GeO}_2 \)
  4. \( \text{N}_2\text{O}_5, \text{P}_4\text{O}_{10}, \text{As}_2\text{O}_5 \)

Correct answer · Option 1

\( \text{B}_2\text{O}_3, \text{Al}_2\text{O}_3, \text{Ga}_2\text{O}_3, \text{In}_2\text{O}_3 \)

Explanation

Group 13 elements have 3 valence electrons and form oxides with general formula \( \text{M}_2\text{O}_3 \), i.e., \( \text{B}_2\text{O}_3, \text{Al}_2\text{O}_3, \text{Ga}_2\text{O}_3, \text{In}_2\text{O}_3 \).
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