Questions: The molecular geometry(shape) of BH3 is trigonal planar trigonal pyramidal tetrahedral linear

Transcript text: The molecular geometry(shape) of $\mathrm{BH}_{3}$ is $\qquad$ trigonal planar trigonal pyramidal tetrahedral linear

Solution

Solution Steps

Step 1: Determine the central atom

The central atom is Boron (B).

Step 2: Count the total number of valence electrons

Boron has 3 valence electrons, and each Hydrogen has 1 valence electron. Since there are three Hydrogen atoms, the total number of valence electrons is 3 + 3(1) = 6.

Step 3: Draw the Lewis structure

Boron is the central atom with three single bonds to the three Hydrogen atoms. This uses all 6 valence electrons. There are no lone pairs on the central Boron atom.

Step 4: Determine the electron geometry and molecular geometry

Since there are three bonding pairs and no lone pairs around the central atom, both the electron geometry and the molecular geometry are trigonal planar. The bond angles are 120 degrees.

Final Answer: The molecular geometry of BH₃ is trigonal planar.

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