Tl (Thallium) is an element with position number 81 in the periodic table.
Located in the VI period. Melting point: 303.6 ℃. Density: 11.85 g/cm3.
Electronic configuration of the Thallium atom in ascending order of orbital energies:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p1
Electronic configuration of the Thallium atom in ascending order of the levels:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p1
Reduced electronic configuration Tl:
[Xe] 4f14 5d10 6s2 6p1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p1
Electronic configuration of the Thallium atom in ascending order of the levels:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p1
Reduced electronic configuration Tl:
[Xe] 4f14 5d10 6s2 6p1
Below is the electronic diagram of the Thallium atom
Distribution of electrons over energy levels in the Tl 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): 3
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): 3
Valence electrons of Thallium
The number of valence electrons in a Thallium atom - 3.
Below are their quantum numbers (N - energy, L - angular momentum, M - magnetic moment, S - spin )
Below are their quantum numbers (N - energy, L - angular momentum, M - magnetic moment, S - spin )
| Orbital | N | L | M | S |
|---|---|---|---|---|
| s | 6 | 0 | 0 | +1/2 |
| s | 6 | 0 | 0 | -1/2 |
| p | 6 | 1 | -1 | +1/2 |
Oxidation states of Thallium: +1, +3
Other elements
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Electronic configurations of other elements
Mercury (Hg) electron configurationLead (Pb) electron configuration
Electronic configuration table
