Question

question 3 (1 point) saved which of the following compounds demonstrates an exception to the octet rule? h2o kcl c2h6 sf6

Explanation:

The octet rule states that atoms tend to gain, lose, or share electrons to have eight electrons in their outer - shell. SF₆ has sulfur with 12 valence electrons around it as sulfur can expand its octet due to the presence of empty d - orbitals. C₂H₆ follows the octet rule for carbon and duet rule for hydrogen. KCl is an ionic compound where potassium loses an electron and chlorine gains one, both achieving stable noble - gas electron configurations. H₂O has oxygen with 8 valence electrons and hydrogen with 2 (duet rule), following the general bonding rules. So, SF₆ is an exception to the octet rule.

Answer:

A. SF₆