Which Elements

[Reese - Dis 1G]

Which elements can have an octet exception?

[Katie Sy 1L]

Sulfur, phosphorus, silicon, and chlorine are some common ones and boron and aluminum can form compounds in which they have six valence electrons

[Faith Fredlund 1H]

Elements with an octet expansion exception begin in the 3rd row because in this row n=3, therefore l=0,1,2 : meaning that electrons of an element in the 3rd row can lie in a l=0 s orbital, a l=1 p orbital, or a l=2 d orbital. Because the 3rd row elements have access to bonding with d-orbitals, they are not limited to the octet rule established by the only eight electrons that can occupy the s and p orbitals. Conversely, there are some elements that are more stable when their octet is only partially filled, with the most common being Boron, which is stable with only three bonds.

[Esther Lee 4H]

Elements with an octet expansion exception begin in the 3rd row because in this row n=3, therefore l=0,1,2 : meaning that electrons of an element in the 3rd row can lie in a l=0 s orbital, a l=1 p orbital, or a l=2 d orbital. Because the 3rd row elements have access to bonding with d-orbitals, they are not limited to the octet rule established by the only eight electrons that can occupy the s and p orbitals. Conversely, there are some elements that are more stable when their octet is only partially filled, with the most common being Boron, which is stable with only three bonds.

thank you!!