We’re being asked **to determine the shape of each structure**. The possible molecular shapes are:

In the problem:

- X represents a central atom
- Y represents outer atoms
- Z represents lone pairs on the central atom

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure

could be abbreviated as XY_{2}Z_{2}.

Classify these structures according to their shape.

XY_{2}Z_{2 } XY_{2}Z_{3} XY_{3}Z_{2} XY_{4}Z XY_{4}Z_{2 } XY_{5}Z XY_{2}Z XY_{3}Z

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