Octet rule

[Adrienne B 1J]

What is the octet rule?

[Dennisse Diaz 1D]

The octet rule is a chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electron configuration as a noble gas.

[Cameron Smith 1I]

Elements from the 3rd period and below can break the octet rule and acquire more than 8 valence electrons (an octet) due to the presence of the d orbital.

[AnnaYan_1l]

As the people above have stated, the octet rule is basically a rule in which atoms combine with other atoms so that they have 8 valence electrons. However, there are exceptions to this rule, so keep this in mind.

[Allen Chen 1J]

The octet rule is the general rule where elements before the d orbital want 8 electrons

[004985802]

that atoms prefer a more stable state of 8 valence electrons (and they lose or gain electrons through bonding or ionization to have full valence shells)

[Jesus A Cuevas - 1E]

The octet rule simply states that 3rd period elements will either want to accept or give away (e-)'s to obtain a full octet, to have an (e-) configuration of a noble gas.

[Alondra Juarez section 1E]

The octet rule is when main group elements combine in a certain way so that each atom has eight electrons in its valence shell.

[madisonhanson1b]

I know elements can break the octet rule, but up to how many extra electrons can they have?

[SammiOrsini_1B]

How do you know when atoms can break the octet rule? or which atoms can break the octet rule?

[nelquosey]

How do you know when atoms can break the octet rule? or which atoms can break the octet rule?

These are just exceptions that need to be memorized, but I don't think we need to worry too much about them. just be familiar in general with the idea that there are atoms that do not agree with the octet rule, and maybe be familiar with what they are.

[QuincyH1G]

When we do break the octet rule, is there any specific way to add electrons?

[Amanda 1A]

you can break the octet rule with atoms that are lower than the 3rd row on the periodic table since they have additional d orbitals as well.

[juliaschreib1A]

The octet rule is when atoms are most stable with a full set of electrons (8). There are many exceptions to this rule that simply just need to be memorized. Therefore, when drawing lewis dot diagrams most times, each element needs to find it's most stable state with 8 electrons each, either shared or not.

[Heung Ching Chia 1E]

Q: When we do break the octet rule, is there any specific way to add electrons?

A: After the third period/row, the octet rule can be broken because of the electrons in the d-block. There is no specific way to add electrons I believe. It is just counting the number of total valence electrons and trying to fit those electrons in a logical way onto the molecule while taking into account the elements' group number/number of valence electrons.

[Elana Weingord 1C]

What are the exceptions to the octet rule?

[KristinaNguyen_1A]

How do you know when atoms can break the octet rule? or which atoms can break the octet rule?

Elements from the 3rd period and below can have more than 8 valence electrons because you have the D orbital added to it.
Some other exceptions are Boron and Aluminum which can have 6 valence electrons and Hydrogen and Lithium which can have 2 valence electrons.

[Erin Li 1K]

atoms are most stable when they have eight electrons. However, there are exceptions to this like hydrogen which only has one electron.