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Ionisation Energy

AB is predomi...

Question

AB is predominantly ionic as $A^{+} B^{-}$ if___________.

{(I P)}_{A} < {(I P)}_{B}

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{(E A)}_{A} < {(E A)}_{B}

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{(E N)}_{A} < {(E N)}_{B}

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Size of

A <

size of B

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Solution

The correct options are
A ${(I P)}_{A} < {(I P)}_{B}$
B ${(E A)}_{A} < {(E A)}_{B}$
C ${(E N)}_{A} < {(E N)}_{B}$
A molecule AB will be predominately ionic if the ionization potentil electron affinity and electronegativity of cation are smaller than those of anion. Due to this, the bond pair of electrons are less strongly attracted by the cation and are more towards anion.

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