Question

A student is asked to identify an element that contains 2 valence electrons and is inert (stable). At which location in this periodic table would the element most likely be found?

Answer 1

Answer:

i think the answer is helium (top right in periodic table)

Answer 2

The element, Helium would be found on the right hand side of the periodic table as the first element of the group 8A.

The Valence electrons of elements help determine the the position of element by thier groups in the periodic table.

Elements with 2  valence electrons will find their location within alkaline earth family or group II A with the exception of helium which has 2 valence electrons but considered to be in a complete duplet state. This makes it very stable and inert.

So instead of helium to be seen in the group 11A , it will be found on the the first row of the group 18/8A  on the right hand side of the periodic table because it shares same characteristics with the noble gases like it.

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