Question

Which of the following is non-planar? a)BF3 b) C2H4 c) XeF4 d) NH3

Answer 1

Answer:

a) BF3

Explanation:

Boron has only 3 valence electrons, so when it bonds with F there will only be 3 electron pairs around the boron atom. Repulsion theory predicts that these three e- pairs should find themselves at the vertices of an equilateral triangle (bond angles of 120 degrees). Thus, BF3 is planar triangular.

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Answer 2

Answer:

a) BF3

Explanation: