Bond angle in NH3BF3?

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It showed up today and I just wrote down 120 degrees since no lone pairs with either N or B (it was dative)

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Answer 1 · 2018-05-22T20:50:03

Every bond angle is approximately 109.5°.

The structure of #"H"_3"N-BF"_3# is

cnx.org

The #"B"# and #"N"# atoms each have four single bonds, so their hybridizations are #"sp"^3# with bond angles of 109.5°.

F3BNH3