Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Question Explanation: Question is asking about to calculate $\frac{x+y}{2}$

Where $\mathrm{X}\to$ Number of hypovalent species

$\mathrm{Y}\to$ Number of hypervalent species

Concept: This question is based on octet rule

Solution:

Molecule Valence electron Type of molecule

BF₃ 6 Hypovalent

BeF₂ 4 Hypovalent

AlCl₃ 6 Hypovalent

NH₃ 8 Electron prise

PCl₅ 10 Hypervalent

SF₆ 12 Hypervalent

CCl₄ 8 Electron prise

IF₇ 14 Hypervalent

CO₂ 8 Electron prise

XeF₄ 12 Hypervalent

$X\to 3$

$Y\to 4$

$\frac{X+Y}{2}=\frac{3+4}{2}=\frac{7}{2}=3.5$

Final answer (3.50)