ClF5 at room temperature is a
Chemical Bonding · Class 11 · JEE Main Previous Year Question
at room temperature is a
- a
Colourless liquid with trigonal bipyramidal geometry
- b
Colourless gas with square pyramidal geometry
- c
Colourless gas with trigonal bipyramidal geometry
- d✓
Colourless liquid with square pyramidal geometry
Colourless liquid with square pyramidal geometry
🧠 Determine the geometry of using VSEPR: Cl has 7 valence electrons, 5 bonds to F, leaving 1 lone pair.
Steric number = 5 + 1 = 6 → octahedral electron geometry → with 1 LP, the molecular shape is square pyramidal (lone pair occupies one axial position of an octahedron, pushing 4 equatorial F atoms into a square base with 1 apical F).
is indeed a colourless liquid at room temperature (boiling point ≈ −13.1 °C, so it is a liquid at room temperature near its bp; sometimes cited as liquid at 25 °C under moderate pressure, or near-liquid at RT). The key fact tested here is its square pyramidal geometry.
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