They're nobile gases, meaning they have their outer valence electron shells filled and so practically no reactivity with other atoms.
Helium has 2 electrons filling its valence shell whereas neon and argon have 8.
Helium and neon are odd elements because they have an odd number of protons in their nucleus. Hydrogen and argon are even elements because they have an even number of protons.
Helium and neon are in the same group, Group 18 (Noble Gases), also known as Group 8A. Argon is also in Group 18.
Among neon, argon, and helium, neon is the most reactive because it tends to form compounds with other elements under extreme conditions. Helium and argon are noble gases and are generally unreactive due to their stable electronic configurations.
Helium, neon, argon, and krypton are all noble gases located in group 18 of the periodic table. They are odorless, colorless, and have low reactivity due to their stable electron configurations. Additionally, they are all found in the Earth's atmosphere in trace amounts.
Neon belongs to group of noble gases. The other elements are Helium, Argon, Krypton, Xenon and Redon.
Helium, neon, and argon are the three lightest members of the noble gases.
There are six: helium, neon, argon, krypton, xenon and radon
The first four are (in order of increasing number / mass: He = Helium, Ne = Neon, Ar = Argon, Kr = Krypton Xe = Xenon and Ra = Radon are the other two noble gases
helium neon argon krypton xenon radon
helium argon krypton xenon radon
Helium, argon, and neon are noble gases with different atomic numbers: helium (2), neon (10), and argon (18). They vary in terms of their densities, boiling points, and chemical reactivity. Neon has the lowest boiling point and argon has the highest atomic weight among the three.
Noble gases
Elements
They are all gases.
Helium Neon and Argon The noble gas group contain: helium, neon, argon, krypton, xenon, radon, ununoctium.
Helium and neon do not typically react with iron under normal conditions. Argon is inert and does not chemically react with iron.
They are all noble gases meaning that all have 8 valence electrons.