What shape would a molecule with four atoms surrounding a central atom have?A.BentB.TetrahedralC.Trigonal planarD.Linear

1. Break Down the Problem

To determine the shape of a molecule with four atoms surrounding a central atom, we need to consider the basic geometries defined by VSEPR (Valence Shell Electron Pair Repulsion) theory.

2. Relevant Concepts

The arrangement of electron pairs around a central atom dictates the molecular geometry. Here are the relevant geometries:

• Linear: 180° bond angles (2 atoms attached)
• Trigonal planar: 120° bond angles (3 atoms attached)
• Bent: <120° bond angles (2 atoms attached with a lone pair)
• Tetrahedral: 109.5° bond angles (4 atoms attached)

3. Analysis and Detail

• Molecule with four surrounding atoms: A central atom bonded to four surrounding atoms will adopt a tetrahedral shape due to the repulsion between the bonds. This configuration allows for the maximum distance between the atoms to minimize electron pair repulsion.

4. Verify and Summarize

Since four atoms surround the central atom, we can confirm that the molecular shape is tetrahedral, based on VSEPR theory.

Final Answer

B. Tetrahedral