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An ionic compound A^(+)B^(-) is most lik...

An ionic compound `A^(+)B^(-)` is most likely to be formed when :

A

The ionization energy of A is high and the electron affinity of B is low

B

The ionization energy of A is low and the electron afinity of B is high

C

The ionization energy of A and the electron affinity of B is high

D

The ionization energy of A and the electron affinity of B is low

Text Solution

Verified by Experts

The correct Answer is:
B
The conditions required for the formation of an ionic bond are :
(i) Ionization enthalpy `[M(g) rarr M+(B) + e^(-)]` of electropositive element must be low.
(ii) Negative value of electron gain enthalpy `[X (g) + e^(-) Xrarr( g)]` of electronegative element should be high
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Knowledge Check

  • A ionic compound A^(+) B ^(-) is most likely to be formed when

    A
    ioniczation enthalpy of A is higt and electron gain enthalpy of B is low
    B
    ionization enthalpy of A is low and electron gain enthalpy of B is high
    C
    Ionic compounds genergally have low m.p. and b.p.
    D
    ionization enthalpy of A and electron gain enthalpy of B is low

  • An ionic bond A B is most likely to be formed when:

    A
    The ionization energy of A is high and the electron affinity of B is low
    B
    The ionization energy of A is low and the electron afinity of B is high
    C
    The ionization energy of A and the electron affinity of B is high
    D
    The ionization energy of A and the electron affinity of B is low

  • The ionic compound A^(+)B^(-) is formed when the

    A
    electron gain enthalpy of B is high
    B
    ionization energy of A is low
    C
    lattice energy of AB is high
    D
    lattice energy of AB is low