Determine what elements are denoted by the following electron configurations:
6) 1s²2s²2p 3s²3p4
7) 1s²2s²2p 3s²3p64s²3d¹04p65s¹
8) [Xe] 6s²4f¹2
9) [Xe] 6s4f45d10
10) [Ne]3s²3p4