NZ Scholarship Chemistry Practice Questions - New Zealand Scholarship Chemistry Assessment (Standard 93102) Exam

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In sulfur tetrafluoride (SF4), where does the lone pair of electrons on the sulfur atom reside in the fundamental electron domain arrangement, and why?

Axial position, because axial positions provide 180° angles to equatorial bonds. Equatorial position, because equatorial placement experiences only two 90° repulsions instead of three. Axial position, because lone pairs prefer smaller bond angles to maximize s-character. Equatorial position, because equatorial positions have greater p-character and shorter bond lengths.

Correct Answer:

Equatorial position, because equatorial placement experiences only two 90° repulsions instead of three.

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