no. it is a molecule, not a noble gas
I am assuming that the question is for Co2+ ion. and the answer is [Ar] 3d5 4s2
No, it is a noble gas
Radon is a noble gas and is radioactive.
A noble gas is colorless.
Neon is a noble gas.
argon is a noble gas
its a noble gas.
Argon is a noble gas
Yes. Helium is a noble gas.
no boron is not a noble gas but it is a nonmetal
Helium is a noble gas
A noble gas.