Answer: Mercury (Hg)
Atomic no.= 80
Electronic Configuration= 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^10. The shortened form of the electronic configuration is: [Xe] 4f14 5d10 6s2.
I hope that this helps you !
