INFORMATION:
We have the following options
a. Oxygen
b. Xenon
C. Iron
d. Hydrogen
And we must select the one that is most likely to have 8 valence e-
STEP BY STEP EXPLANATION:
To select the correct option, we need to know that noble gases have 8 valence electrons, their electron shell of valence electrons is considered complete, giving them little tendency to participate in chemical reactions.
In the given options, the one that is a noble gas is Xenon.
Finally, Xenon is most likely to have 8 valence e-
ANSWER:
b. Xenon