Question

what is the molecular geometry of icl₃? note that you must draw the correct lewis - dot structure to answer this question. trigonal pyramidal trigonal planar t - shaped tetrahedral trigonal bipyramidal question 6 1 pts what is the molecular geometry of siobr₂? note that you must draw the correct lewis - dot structure to answer this question. t - shaped linear tetrahedral trigonal planaer trigonal pyramidal

Explanation:

Step1: Determine central atom in ICl₃

Iodine (I) is the central atom as it is less electronegative than chlorine (Cl). I has 7 valence electrons and each Cl has 7 valence electrons. Total valence electrons = 7 + 3×7 = 28.

Step2: Draw Lewis - dot structure of ICl₃

Place I in the center and connect it to 3 Cl atoms with single bonds. Then distribute remaining electrons as lone - pairs to satisfy octets. I has 2 lone - pairs in addition to 3 bonding pairs.

Step3: Apply VSEPR theory

The electron - pair geometry around I is trigonal bipyramidal (5 electron groups: 3 bonding and 2 non - bonding). The molecular geometry considering only the bonding atoms is T - shaped.

Step4: Determine central atom in SiOBr₂

Silicon (Si) is the central atom. Si has 4 valence electrons, O has 6 valence electrons and each Br has 7 valence electrons. Total valence electrons = 4+6 + 2×7 = 24.

Step5: Draw Lewis - dot structure of SiOBr₂

Connect Si to O with a double bond and to 2 Br atoms with single bonds. Distribute remaining electrons as lone - pairs. Si has 0 lone - pairs, O has 2 lone - pairs and each Br has 3 lone - pairs.

Step6: Apply VSEPR theory

The electron - pair geometry around Si is trigonal planar (3 electron groups: 3 bonding and 0 non - bonding). The molecular geometry is trigonal planar.

Answer:

For ICl₃: C. T - shaped
For SiOBr₂: D. Trigonal planar