Chemistry · Covalent Bonding: Concept of electronegativity, Fajan's rule, dipole moment, Valence Shell Electron Pair Repulsion (VSEPR) theory and shapes of simple molecules
has less solubility in water, but its solubility increases on adding in the solu
\( I_{2} \) has less solubility in water, but its solubility increases on adding \( K I \) in the solution. When \( K I \) and \( I_{2} \) react, then a species \( X \) is formed and solubility of \( I_{2} \) solution increases. The geometry of the anionic part of \( \boldsymbol{X} \) is:
- A. Linear
- B. T-shape
- C. Pyramidal
- D. See-saw
Step-by-step solution
KI reacts with I2 to form KI3. The anionic part is I3- (triiodide ion). According to VSEPR theory, the central iodine atom in I3- has 5 electron pairs (2 bonding, 3 lone pairs), resulting in a linear geometry with a bond angle of 180°.