Lewis Structure of XeF₄ (Xenon Tetrafluoride)
What is the Lewis structure of XeF₄?
XeF₄ has 36 valence electrons, 4 bonding electron pairs, and 14 lone pairs. XeF₄ has 36 valence electrons. Eight are in four Xe-F bonds, 4 form 2 lone pairs on xenon, and 24 form 3 lone pairs on each fluorine. Xenon has 12 electrons around it (expanded octet). The 2 lone pairs occupy axial positions, giving a square planar molecular geometry.
| Formula | XeF₄ |
| Name | Xenon Tetrafluoride |
| Total Valence Electrons | 36 |
| Lone Pairs | 14 |
| Has Resonance | No |
| Concept | Expanded Octet |
| Difficulty | Advanced |
Step 1: Count Valence Electrons
Xe has 8, each F has 7: 8 + 4(7) = 36 total.
Step 2: Draw the Skeleton
Xenon forms 4 single bonds to fluorine, using 8 electrons; 28 remain.
Step 3: Distribute Lone Pairs
Each F gets 3 lone pairs (24 electrons). 4 electrons remain as 2 lone pairs on Xe. Total on Xe: 12 electrons.
Step 4: Form Multiple Bonds
No multiple bonds. Xe has 4 bonds + 2 lone pairs = 12 electrons around it.
Step 5: Check Formal Charges
- Xe: FC = 8 - 4 - ½(8) = 0
- F: FC = 7 - 6 - ½(2) = 0
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