Radium electron configuration

Ra (Radium) is an element with position number 88 in the periodic table. Located in the VII period. Melting point: 700 ℃. Density: 5.5 g/cm3.
Electronic configuration of the Radium atom in ascending order of orbital energies:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2

Electronic configuration of the Radium atom in ascending order of the levels:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 7s2

Reduced electronic configuration Ra:
[Rn] 7s2

Below is the electronic diagram of the Radium atom
Orbital diagram of the Radium atom
Distribution of electrons over energy levels in the Ra atom
1-st level (K): 2
2-st level (L): 8
3-st level (M): 18
4-st level (N): 32
5-st level (O): 18
6-st level (P): 8
7-st level (Q): 2
Distribution of electrons in the Radium

Valence electrons of Radium

The number of valence electrons in a Radium atom - 2.
Below are their quantum numbers (N - energy, L - angular momentum, M - magnetic moment, S - spin )
OrbitalNLMS
s700+1/2
s700-1/2
Oxidation states of Radium: +2
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