Q.

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

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a

MgO has a higher melting point than BaO

b

 BaO is more ionic than MgO

c

MgO is more ionic than BaO

d

BaO has a higher melting point than MgO

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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