Question

the molecules in the following set do not include which of the following shapes? xef₂, bf₃, brf₅, clo₄⁻ t - shaped trigonal planar trigonal pyramidal linear tetrahedral

Explanation:

1. XeF₂: Central Xe has 8 valence electrons; 2 bonding pairs + 3 lone pairs → electron geometry trigonal bipyramidal, molecular shape linear.
2. BF₃: Central B has 3 valence electrons; 3 bonding pairs + 0 lone pairs → trigonal planar.
3. BrF₃: Central Br has 7 valence electrons; 3 bonding pairs + 2 lone pairs → T-shaped.
4. ClO₃⁻: Central Cl has 7 valence electrons + 1 (from charge) = 8; 3 bonding pairs + 1 lone pair → trigonal pyramidal.

Tetrahedral shape is not present in the set.

Answer:

tetrahedral