Crossword

[kenandbarb]

What is Noble Gas

[deepseadiver]

any of the chemically inert gaseous elements of the helium group in the periodic table ....it was also an answer in yesterdays Scotsman

[markysngc]

basically they are stable non-reactive gases. theres generally considered to be six of them

helium (He),
neon (Ne),
argon (Ar),
krypton (Kr),
xenon (Xe)
radon (Rn)