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expanded octet

Posted: Tue Nov 12, 2019 2:08 pm
by Sophia Dinh 1D
When can you assume the octet can expand?

Re: expanded octet

Posted: Tue Nov 12, 2019 2:09 pm
by Kallista McCarty 1C
The octet can expand past the second row

Re: expanded octet

Posted: Tue Nov 12, 2019 5:39 pm
by Daniel Toscano 1L
If the element is in the 3rd row or under in the periodic table, then it can have an expanded octet as the third row has access to the d-block, which can hold ten more electrons if needed.

Re: expanded octet

Posted: Tue Nov 12, 2019 5:59 pm
by Ashley Kim 3F
Elements with orbitals in the d-block can have expanded octets. However, although P, S, and Cl do not have orbitals in the d-block, they are exceptions to the octet rule and can also hold more electrons than the standard octet.

Re: expanded octet

Posted: Fri Nov 15, 2019 12:49 am
by Caitlin Ciardelli 3E
The elements that are in row three and below can have expanded octets. This is due to the fact that the elements row three and below can utilize the d orbital, allowing an additional ten electrons after the initial octet. Row 2 and above however, is limited to an octet, eight electrons, because they can only utilize s and p orbitals.

Re: expanded octet

Posted: Sun Nov 24, 2019 11:56 pm
by Diana A 2L
Why do P, S, and Cl have expanded octets if they don't have d-orbitals? It doesn't make much sense.

Re: expanded octet

Posted: Mon Nov 25, 2019 7:43 am
by AronCainBayot2K
Elements that can have expanded octets include the 3rd row and every element below. This is due to the d-block with some elements as an exception to this rule. Elements above the third row must fulfill the octet rule when drawing a lewis structure.

Re: expanded octet

Posted: Fri Dec 06, 2019 12:47 pm
by Kaitlynn Tran 3F
Most atoms after P on the periodic table in the d-block can have an expanded octet.