The have completely filled valence orbitals, generally chemically inert and hence considered to be noble.
helium, neon, argon, krypton, xenon and radon
krypton
krypton
The balloon with krypton gas has a higher density than the balloon with argon gas.
Helium, Neon, Argon, Krypton, Xenon, and Radon.helium (studyisland answer)
they do not for compounds except for xenon, krypton and argon. These compounds are all very unstable. The first compounds of xenon and krypton were found 50 years ago, and compounds of argon only in the last 15 years.
The density of krypton and argon are 3.749 g/L and 1.784 g/L respectively at 0oC. So krypton is heavier than argon.
Neither. Both argon and krypton does not react with nitrogen.
helium, neon, argon, krypton, xenon and radon
krypton
The element that has the same number of electrons as argon is Krypton (Kr). Both argon (Ar) and krypton (Kr) have 18 electrons in their neutral state.
krypton
Krypton, Argon
Argon is generally considered to be unreactive element, i.e. it cannot form compounds. But new researchs have found that argon can form a compound called Argon fluorohydride(HArF) which is very unstable. Here Argon's charge may be neutral, i.e. 0
The balloon with krypton gas has a higher density than the balloon with argon gas.
Helium, Neon, Argon, Krypton, Xenon, and Radon.helium (studyisland answer)
Argon is chemically inert and does not form compounds