its actually Einsteinium.
Lanthanum has an atomic number of 57 and is the first element in the Lanthanoids. Its full orbital notation is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1.
The radioactive element neptunium (atomic number 93) has the electron configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p64f14 5d10 6s2 6p6 7s2 6d1 5f4 The noble gas form is [Rn] 7s2 6d1 5f4
The electron configuration for uranium is Rn 5f3 6d1 7s2.
The electron configuration of uranium is Rn 5f3 6d1 7s2.
Lawrencium is a trivalent chemical element.
Mendelevium (Md)
Mendelevium is a block f, period 7 actinide element. Its electron configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p6 5f13 7s2. Another way to write this is [Rn] 5f13 7s2 since the beginning of its configuration is the same as radon's.
The element whose electronic structure is [Rn]7s2 = Raradium
[Rn] 7s2 is the noble gas notation for radium. A link is provided to the Wikipedia article on radium.
1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f146d107p3 or the abbreviated electron configuration is [Rn]7s25f146d107p3
[Rn]7s2
The noble gas notation for Seaborgium (Sg) is [Rn] 5f14 6d4 7s2.
Lanthanum has an atomic number of 57 and is the first element in the Lanthanoids. Its full orbital notation is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1.
The electron configuration of roentgenium is: [Rn]5f14.6d9.7s2.
[Rn] 5f6 7s2.
The noble gas configuration of seaborgium (Sg) is [Rn] 5f14 6d4 7s2. Seaborgium is a synthetic element with the atomic number 106, and its electron configuration is based on the filling of electron orbitals following the Aufbau principle.
The element radium (atomic number 88) has the long term electron configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p64f14 5d10 6s2 6p6 7s2 The electron configuration (short form) of radium is [Rn]7s2. It's configuration is also 2.8.18.32.18.8.2