Answer:
C
Explanation:
They are stabil and full of valence electron.
Considering the definition and properties of noble gases, a full valence electron configuration causes the noble gases to be unreactive. (option C)
Noble gases or inert gases are known as the set of chemical elements that constitute group 18 (VIIIA) of the Periodic Table of the elements.
Noble gases have a very low chemical reactivity. This is because they have a complete valence shell that gives them a low tendency to capture or release electrons. For this reason they have also received the name of inert gases or rare gases.
In other words, the electronic configuration of the noble gases is that their outermost shell or valence shell is always complete, without the need to accept or give up electrons. Then they are in a state of maximum stability.
Because all chemical transformations involve valence electrons, noble gases do not participate in chemical reactions to form chemical compounds, since they are very stable on their own.
In summary, a full valence electron configuration causes the noble gases to be unreactive. (option C)
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