Because the valency shell for its electrons is full.
Argon is a very stable element, and isn't very reactive.
Argon is stable. Calcium is reactive. There is no compound that forms between argon and calcium.
Argon is a Non-Reactive Element. Magnesium is a very Reactive Element. Magnesium will react violently when ignited in an Oxygen rich environment.
Pure sodium is very reactive and therefore not chemically stable.
It only has to lose one electron to get to a stable octet and the inert gas structure of Argon (which is very energetically favorable) - lead has to gain 4 to become Radon noble gas.
Argon is a very stable element, and isn't very reactive.
Argon is stable. Calcium is reactive. There is no compound that forms between argon and calcium.
Argon is a noble gas, and very non-reactive. Argon fluorohydride, HArF has been synthesized, but is only stable at very low temperatures.
No, argon is not a highly reactive gas. It is stable.
Yes you are correct, potassium being an alkali metal is definitely more reactive than argon which is a noble gas (group 18 element). Potassium reacts violently with just water while argon is very inert and stable, which is why it remains in the atmosphere as a monatomic element.
Argon has completely filled valence orbitals and hence is unreactive. Sodium has one valence electron. If sodium loses this electron it will attain the stable electron configuration of the nearest noble gas (argon) and hence is reactive.
Argon is a Non-Reactive Element. Magnesium is a very Reactive Element. Magnesium will react violently when ignited in an Oxygen rich environment.
it's not very reactive
Pure sodium is very reactive and therefore not chemically stable.
They have very low chemical reactivity because they all have a full outer shell, i.e. they all have 8 electrons in their outer shell. This makes them very stable and thus not very reactive.
All naturally occurring isotopes of argon are stable against radioactive decay at any temperature whatever, and argon is also chemically stable in the absence of fluorine or some other very strong oxidizing agent.
Hydrogen is a very reactive chemical element.