Cobalt has 9 valence electrons and generally cant lose 9 electrons to achieve the noble gas configuration.
[Ar] 4s2 3d9
[Ar],4s2,3d7
[Ar]3d74s2
The atomic no of Cobalt is 27 which is intermediate of 18 for noble gas Argon and 36 for noble gas Krypton, practically Cobalt can't accept 9 electrons similarly can not donate nine electrons so it tends to reach the electronic configuration of Krypton by forming extra coordinate covalent bond.
No, it is a noble gas
Radon is a noble gas and is radioactive.
Neon is a noble gas.
its a noble gas.
Co is cobalt and is not a noble gas. Cobalt is a transition metal. Its electron configuration is [Ar]3d74s2.
[Ar]3d74s2
The atomic no of Cobalt is 27 which is intermediate of 18 for noble gas Argon and 36 for noble gas Krypton, practically Cobalt can't accept 9 electrons similarly can not donate nine electrons so it tends to reach the electronic configuration of Krypton by forming extra coordinate covalent bond.
[Ar] 4s2 3d7
No, it is a noble gas
Radon is a noble gas and is radioactive.
no. it is a molecule, not a noble gas
A noble gas is colorless.
Neon is a noble gas.
its a noble gas.
Argon is a noble gas
argon is a noble gas