6 pair

Formula Lewis Structure 3D Representation Spacefilling
3D Model 3D model
w/lone pairs

PF₆^-

for a QTVR object

XeF₄

for a QTVR object

The correct structure for XeF₄ is drawn above; however, an alternate structure can be drawn. compare

This orientation is not expected because it places two lone pairs next to each other. Since lone pairs occupy more space than bonding pairs the lowest energy structure is the one in which the lone pairs are as far appart as possible; i.e., the stucture drawn above.

for a QTVR object

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Formula	Lewis Structure	3D Representation	Spacefilling 3D Model	3D model w/lone pairs
PF₆^-				for a QTVR object
XeF₄				for a QTVR object
The correct structure for XeF₄ is drawn above; however, an alternate structure can be drawn. compare
This orientation is not expected because it places two lone pairs next to each other. Since lone pairs occupy more space than bonding pairs the lowest energy structure is the one in which the lone pairs are as far appart as possible; i.e., the stucture drawn above.				for a QTVR object