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Q.

Assertion (A) : Electronegativity of Sb and Bi are the same. 
Reason (R) : First ionization enthalpy of Bi is greater than that of Sb.

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a

(A) is true but (R) is false

b

Both (A) and (R) are true but (R) is not the correct explanation of (A)

c

Both (A) and (R) are true and (R) is the correct explanation of (A)

d

Both (A) and (R) are false

answer is C.

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Detailed Solution

The Electronegativity of Sb and Bi are the same, the first ionization enthalpy of Bi is lesser than that of Sb.

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