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Q.

Statement - I :Electronegitivity of Sb and Bi are the same
Statement - II :First ionization enthalpy of Bi is greater than that of Sb

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a

Both statements I and II are correct

b

Statement-I is incorrect and statement-II is correct

c

Both statements I and II are incorrect

d

Statement-I is correct and statement-II is incorrect

answer is C.

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Detailed Solution

Sb and Bi have same electronegativity because of the poor screening effect of f orbitals.

Antimony has high first ionization enthalpy than Bismuth, because Bismuth has larger size than antimony.

Hence, Statement-I is correct and statement-II is incorrect

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