A valid Lewis structure of __________ cannot be drawn without violating the octet rule. A)PO₄3^- B)SiF₄ C)CF₄ D)SeF₄ E)NF₃

Question

Quizplus · Accepted Answer

In SeF4, Selenium has 6 valence electrons and each fluorine atom brings 7 valence electrons which totals to 34 electrons to be placed. This means that SeF4 has one lonely pair on selenium. To satisfy the octet rule, the lone pair must be on one of the fluorine atoms which means that the molecule has resonance structures. Therefore, a valid Lewis structure cannot be drawn without violating the octet rule.

A Valid Lewis Structure of __________ Cannot Be Drawn Without