8. Which of the following statements is correct?
(A) Argon has ionization energy higher than bromine.
(B)Among Na- , Na, and Na+ , Na- has the smallest radius.
(C) For Rb, Na, and Be, the order of increasing atomic size is Rb < Na < Be.
(D) In the ground state of mercury, Hg, its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d104p6 5s2 4d10.
(E)In the ground state of element 115, Uup, it has 24 electrons occupying atomic orbitals with l = 3.