Chemistry - Complete Pblock- Question with Solution | TestHub

Compounds identified: A is XeF₄ (from a 1:5 ratio of Xe:F₂), B is XeF₆ and C is O₂ (from XeF₄ + O₂F₂ → XeF₆ + O₂), and D is Cs⁺[XeF₇]⁻.

Lone pairs on Xe ($x$): XeF₄ has 2, XeF₆ has 1, and [XeF₇]⁻ has 1, giving a total sum of $x=2+1+1=4$.

Sigma bonds ($y$): XeF₄ has 4, XeF₆ has 6, and [XeF₇]⁻ has 7, giving a total sum of $y=4+6+7=17$.

Final calculation: $y-x=17-4=13$.