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### octets

Posted: Fri Oct 26, 2018 1:04 pm
How can you distinguish if an element has a full octet? Does each orbital have to have a full octet before moving to the next orbital?

### Re: octets

Posted: Fri Oct 26, 2018 1:34 pm
An element has an octet if it has 8 valence electrons. Yes, an orbital does need a full octet before moving to the next orbital (at least for the level we are learning).

### Re: octets

Posted: Fri Oct 26, 2018 4:38 pm
The only elements with full octets are the noble gases. Other elements must bond to form compounds in order to get a full octet. You can use the periodic table to see how many electrons an element has based on its group number.

### Re: octets

Posted: Fri Oct 26, 2018 6:21 pm
An element's goal is to complete a full outer shell meaning they want to have 8 valence electrons. This means all have to complete the orbital in order to be able to move on to the next.

### Re: octets

Posted: Fri Oct 26, 2018 8:52 pm
You can distinguish if an atom has a full octet by their number of valence electrons and core electrons. With these numbers you can determine how shells would fill up. Essentially a full octet means that an atom would have 8 valence electrons (a noble gas). In their efforts to bond, atoms look to form a full octet.

### Re: octets

Posted: Fri Oct 26, 2018 10:01 pm
Each orbital requires an octet of 8 valence electrons. If for example the element being observed is Ca or calcium its best to lose 2 electrons rather than gain 6 because gaining 6 additional electrons would make it very unstable.

### Re: octets

Posted: Fri Oct 26, 2018 10:46 pm
A certain elements octet depend on how many electrons they have. You can find the number of electrons they have based on their periodic table.

### Re: octets

Posted: Sun Oct 28, 2018 4:20 pm
Most atoms want to follow the octet rule (except for a few like H) but think of 8 being like the "most stable state" and hence you will need to fill it up to move to the next orbital.

### Re: octets

Posted: Sun Oct 28, 2018 4:31 pm
katietietsworth_3c wrote:How can you distinguish if an element has a full octet? Does each orbital have to have a full octet before moving to the next orbital?

Only noble gasses in their natural state have an octet. However, there are two ways to figure out how many electrons an element needs to complete an octet.
One, you can look at the periodic table and based on the group of the element, you can see if it need +1, +2, etc.
Another way to do this is with the electrons configuration. Since electron configurations are based on lowest to highest energy, the higher energy tells you how many electrons you need.

### Re: octets

Posted: Sun Oct 28, 2018 6:28 pm
A full octet has eight valence electrons in it, and yes, each orbital needs to have eight electrons in it before you can move to the next orbital.

### Re: octets

Posted: Sun Oct 28, 2018 8:58 pm
if the element has 8 valence electrons then its a full octet, the main exceptions to the rule are hydrogen, helium, lithium and barium

### Re: octets

Posted: Sun Oct 28, 2018 9:27 pm
An electron must have a full octet before It goes to the next energy level. Hydrogen and Helium are satisfied with only two electrons in their outermost valence shell.

### Re: octets

Posted: Mon Oct 29, 2018 3:06 pm
when a atom has 8 valence electrons it is an octet

### Re: octets

Posted: Mon Oct 29, 2018 3:20 pm
Nicole Jakiel 4F wrote:A full octet has eight valence electrons in it, and yes, each orbital needs to have eight electrons in it before you can move to the next orbital.

An orbital can have a maximum of 2 electrons, not 8.