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JEE Main 2011
Exam
JEE Main
Year
2011
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2011 · Chemistry · Classification of Elements and Periodicity in Properties

Which one of the following order represents the correct sequence of...

Which one of the following order represents the correct sequence of the increasing basic nature of the given oxides ?

Options

  1. AMgO<K2O<Al2O3<Na2O\mathrm{MgO} < \mathrm{K}_2 \mathrm{O} < \mathrm{Al}_2 \mathrm{O}_3 < \mathrm{Na}_2 \mathrm{O}
  2. BNa2O<K2O<MgO<Al2O3\mathrm{Na}_2 \mathrm{O} < \mathrm{K}_2 \mathrm{O} < \mathrm{MgO} < \mathrm{Al}_2 \mathrm{O}_3
  3. CK2O<Na2O<Al2O3<MgO\mathrm{K}_2 \mathrm{O} < \mathrm{Na}_2 \mathrm{O} < \mathrm{Al}_2 \mathrm{O}_3 < \mathrm{MgO}
  4. DAl2O3<MgO<Na2O<K2O\mathrm{Al}_2 \mathrm{O}_3 < \mathrm{MgO} < \mathrm{Na}_2 \mathrm{O} < \mathrm{K}_2 \mathrm{O}

Correct answer

D. Al2O3<MgO<Na2O<K2O\mathrm{Al}_2 \mathrm{O}_3 < \mathrm{MgO} < \mathrm{Na}_2 \mathrm{O} < \mathrm{K}_2 \mathrm{O}

Step-by-step solution

Across a period metallic strength decreases &\& down the group it increases
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