Question

Which of the following has correct increasing basic strength?

• A. \( {MgO} < {BeO} < {CaO} < {BaO} \)
• B. \( {BeO} < {MgO} < {CaO} < {BaO} \)
• C. \( {BaO} < {CaO} < {MgO} < {BeO} \)
• D. \( {CaO} < {BaO} < {BeO} < {MgO} \)

Hint:

The basic strength of oxides increases as the electronegativity of the metal decreases, making the oxide more ionic and basic.

Answer 1

The Correct Option is B

Step 1: The basic strength of oxides generally increases as we move down a group in the periodic table. This is because the oxides become more ionic and thus more basic. 
Step 2: The order of basicity is inversely related to the electronegativity of the metal. As we move from Be to Ba, the metal's electronegativity decreases, and the oxide becomes more basic. 
Step 3: The correct order of increasing basic strength is: \[ {BeO} < {MgO} < {CaO} < {BaO}. \]