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noble gases

Helium has 2 valence electrons, whereas the rest have 8.

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Q: What group of elements do not have an identical outer electron configuration?
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Related questions

What group of elements have stable electron confoguration?

The group of elements that have a stable electron configuration are the noble gases.


What is the outer electron configuration for all group 1 elements?

1


Mention the General electronic configuration of nitrogen group elements?

these elements have 5 electron in the valence shells and have configuration of ns np5


Why group 17 elements are strong non metals while group 1 elements are strong metals?

All elements tend to react with other elements so as to attain a noble gas electronic configuration in their ions, because such a configuration usually has the lowest energy for a particular atom or ion, other factors being equal. The drive to form such an ion is strongest when the electron configuration of an elemental atom differs from the closest noble gas configuration by only one electron, and this criterion is true for both group and group 17 elements: Group 1 elements can attain a noble gas electron configuration by donating one electron to another atom, and Group 17 elements can attain a noble gas configuration by accepting one electron, thereby filling their valence shell.


Which group will have an electron configuration that ends in s2?

The alkaline earth elements electron structure end in s2


Trends in the properties of elements in a group or period can be explained in terms of?

Electron Configuration


How many electrons does group 7A need to become stable?

In the modern periodic table, these elements belong to group 17. These elements have s2 p5 electron configuration. Hence they need one more electron from an electron donor to fulfill its valence shell to obtain noble gas configuration.The elements in the group 7A has 7 electrons in their outermost energy level. They gain 1 electron to get the noble gas configuration. The elements in the group 7A are called halogens.


What elements lack a noble gas electron configuration?

Only group 18 elements have noble gas configuration. All other elements lack a noble gas electronic configuration.


What group attains Electron Configuration of noble gases by gaining one electron?

nitrogen will get noble gas configuration by adding three more electrons.


What is the valence electron configuration of each element in group 1?

All elements in group 1 have 1 valence electron.


How many elements have electrons at ns2np6?

All of the elements in group 8A have this electron configuration except for He! (So a total of 5 elements)


What achieve noble gas configuration by losing one electron?

All elements from group 1