at room temperature is a

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Canvas Classes · Accepted Answer

Step 1 — Physical state of :
 (chlorine pentafluoride) is a colourless liquid at room temperature (boiling point ≈ −13.1°C, so it is a liquid at room temperature ~25°C).

Step 2 — Geometry of :
- Cl has 5 bonds (to F) + 1 lone pair = 6 electron pairs
- 6 electron pairs → octahedral electron geometry
- 1 lone pair → square pyramidal molecular shape

Answer: Option (4) — Colourless liquid with square pyramidal geometry

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