Octet rule

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Kalsuda Lapborisuth 1B
Posts: 27
Joined: Fri Apr 06, 2018 11:03 am

Octet rule

Postby Kalsuda Lapborisuth 1B » Sun May 13, 2018 9:18 pm

Is there a guideline to an octet rule violation?

MariahClark 2F
Posts: 60
Joined: Wed Nov 15, 2017 3:04 am

Re: Octet rule

Postby MariahClark 2F » Sun May 13, 2018 9:38 pm

Here are common violations to the octet rule:
1. There are a few stable compounds that have an odd number of electrons in their valence shell, which forces at least one atom in the compound to violate the octet rule. An example is NO, where the N has 7 valence electrons and O has a full 8.
2. There are some stable compounds where one atom has less than 8 valence electrons around it. A common example of this is usually covalent compounds of beryllium and boron. Like BF(3) or BeCl(2).
3. " These are called expanded valence shell molecules. Such compounds are formed only by central atoms in the third row of the periodic table or beyond that have empty d orbitals in their valence shells that can participate in covalent bonding. One such compound is PF5." This was from a site where I looked up common octet rule violations.


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