The element is 'argon' and belongs to noble gas family.
The unreactive elemnyt in period 3 is Argon, Ar, a noble gas
Argon is the unreactive gas that makes up 1 percent of the Earth's atmosphere. It is a noble gas and is commonly used in applications where an inert atmosphere is required, such as in light bulbs and welding.
Helium is a nonreactive element that was discovered as a pure element. It is a noble gas with a full outer electron shell, making it stable and unreactive with other elements.
Helium is the noble gas least likely to form a compound with another element because it has a full outer electron shell, making it very stable and unreactive.
Argon.
An example of an unreactive gas that sinks in air is carbon dioxide (CO2). Due to its higher density compared to air, it displaces air and sinks towards the ground. This property makes it useful for extinguishing fires in some fire suppression systems.
the basically unreactive gas argon (element) is in a light bulb to prevent the tungsten (element) filament from coming into contact with oxygen (element) and getting oxygenated.
Krypton is an unreactive gas.
Neon (Ne) is a noble gas, very unreactive.
The element is 'argon' and belongs to noble gas family.
Element 118 is a noble gas, which means it would be largely unreactive. Only a few atoms of this gas have been synthesized.
N2, nitrogen is about 78% in air but does not take part in several reactions as oxygen does so we can say that after noble gases Nitrogen is the least reactive gas or element.
Helium (or alpha particles)
The unreactive elemnyt in period 3 is Argon, Ar, a noble gas
Krypton is an element not a compound. It is a noble gas (group 0) and has atomic number 36. It is a very stable and unreactive element.
In short, an element's valence shell is full and most stable when it contains eight electrons (this stability is the reason that the noble gases are so unreactive).