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Because they have completely filled (stable, chemically inert) electronic configuration.
What else can I help you with?
Why are noble gases very reactive?
Nobel gases are very unreactive.
What elements are considered not very reactive?
Noble Gases
Why arent noble gasses very reactive?
The external shell of electrons is full.
How do physical and chemical properties of the halogens compare with those of the noble gases?
Noble gases are not reactiveHalogens are very reactive.
How do psychical and chemical properties of halogens compare with those of the inert gas?
At room temperature the lighter halogens, F, Cl are diatomic gases, Br is a liquid, I is a solid. All of the halogens are colored and toxic. The noble gases are all colorless odorless non chemically toxic monoatomic gases. (Radon is radioactive).
How do the physical and chemical properties of the halogens compare with those of the noble glasses?
Halogens are extremely reactive, noble gases are very unreactive. All noble gases are gases; only F and Cl are gases.
What is the least reactive element?
The noble gases: Helium, neon, etc.
Is the group halogens in a periodic table reactive?
Very much so. The only group that isn't reactive is the Noble gases, however even some noble gases will react under the right conditions.
Noble gases are chemically?
Noble gases are chemically inert, meaning they are generally non-reactive with other elements. This is due to their stable electron configuration, with a full outer shell of electrons. This makes noble gases very useful in applications where a non-reactive atmosphere is required.
How does having an octet effect noble gases behavior in chemical reactions?
The full octet means the element is inert (non-reactive.)
Is He a noble gas?
Yes. It is the first of the noble gases, or group 18.
What happens when two noble gases are combined?
When two noble gases are combined, they tend to form a stable non-reactive mixture due to their full outer electron shells, which makes them very unlikely to react with other elements. This makes noble gas compounds very rare under normal conditions.
