A Molecule Has Three Electron Groups on the Central Atom

question 21

Multiple Choice

A molecule has three electron groups on the central atom and has two surrounding atoms. What is the likely shape of the atom?

• A) Trigonal pyramidal
• B) Bent
• C) Trigonal planar
• D) Linear
• E) Tetrahedral

---

Definitions:

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, which regulates the passage of substances in and out of the cell.

Cadherins

Transmembrane proteins that are components of adhering junctions between animal cells.

Adhering Junctions

Cell-to-cell junctions that mechanically attach the cytoskeleton of a cell to that of another, playing a key role in maintaining tissue integrity.

Desmosomes

Cell structures specialized for cell-to-cell adhesion, found particularly in epithelial and cardiac tissues, helping to resist shearing forces.