Q.

Which of the following statements is/are true for BaO and MgO ?

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a

 BaO is more ionic than MgO

b

MgO is more ionic than BaO

c

BaO has a higher melting point than MgO

d

MgO has a higher melting point than BaO

answer is A, D.

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Detailed Solution

BaO is more ionic beeause Ba is more electropositive than Mg⋅ MgO has higher MP than BaO because of higher lattice energy of MgO. Thus, the correct option are a and d.

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Which of the following statements is/are true for BaO and MgO ?