Statement-1: ${NF}_{3}$ has little tendency to act as a donor molecule.
Statement-2: The highly electronegative F atoms attract electrons and these moments partly cancel the moment from the lone pair.

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Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1

Statement-1 is True, Statement-2 is True, Statement-2 Is NOT a correct explanation for Statement-1

Statement-1 is True, Statement-2 is False

Statement-1 is False, Statement-2 is True.

answer is A.

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Detailed Solution

" ${NF}_{3}$ has little tendency to act as a donor molecule" is correct

Because the bond angles in ${NH}_{3}$ and ${NH}_{3}$ are 103.3° and 103.2°, respectively, indicating that the polarity difference is attributable to differences in bond polarities rather than molecular geometry. Because of these disparities in the availability of unshared electron pairs, ${NH}_{3}$ does not operate as an electron pair donor.

"The highly electronegative F atoms attract electrons and these moments partly cancel the moment from the lone pair" is correct because higher nuclear charge value will result in a higher electronegativity value. This occurs because an increase in nuclear charge creates stronger electron attraction.

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