Question

4. Identify correct statement regarding NH3 and BF3
(a) Both are Lewis acid
(b) Both are iso structural
(c) Both are Lewis base
(d) Have different values of dipole moment​

Answer 1

Answer:

both are isostructural

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Answer 2

The correct statement regarding NH3 and BF3 is: (d) Have different values of dipole moment.

NH3 (Ammonia) and BF3 (Boron trifluoride) are two different compounds with distinct chemical properties.

• NH3 is a polar molecule due to the presence of an unshared pair of electrons on the nitrogen atom, which causes a partial negative charge on nitrogen and a partial positive charge on the hydrogen atoms. The dipole moment of NH3 is 1.47 D.
• BF3 is a nonpolar molecule as it has a trigonal planar molecular geometry, and the three B-F bonds are arranged symmetrically around the central boron atom, which results in the cancellation of dipole moments. The dipole moment of BF3 is zero.
• Both NH3 and BF3 are Lewis acids, but NH3 can also act as a Lewis base due to the presence of an unshared pair of electrons on the nitrogen atom. BF3 cannot act as a Lewis base as it does not have any unshared pair of electrons on the boron atom.
• Both NH3 and BF3 have different molecular structures, and thus they are not isostructural.

In conclusion, NH3 and BF3 are two distinct molecules that have different dipole moments due to their different molecular structures. They both act as Lewis acids, but NH3 can also act as a Lewis base, whereas BF3 cannot.

Therefore, the correct option is (D).

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https://brainly.in/question/21549818

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