Molecular Shapes Worksheet with electron dot structures and 3D models for PBr3, H2S, and CH4, including questions on molecular geometry and polarity.

1. PBr₃
- Electron Dot Structure: Phosphorus (P) is central with 5 valence electrons. It forms single bonds with three bromine (Br) atoms (each Br has 7 valence electrons). After bonding, P has one lone pair and each Br has three lone pairs.
- Geometry: Trigonal pyramidal
- Polarity: Polar

2. H₂S
- Electron Dot Structure: Sulfur (S) is central with 6 valence electrons. It forms single bonds with two hydrogen (H) atoms (each H has 1 valence electron). After bonding, S has two lone pairs.
- Geometry: Bent (or angular)
- Polarity: Polar

3. CH₄
- Electron Dot Structure: Carbon (C) is central with 4 valence electrons. It forms single bonds with four hydrogen (H) atoms (each H has 1 valence electron). No lone pairs on carbon.
- Geometry: Tetrahedral
- Polarity: Nonpolar