Ion Tc3+
| Symbol | Tc3+ |
| Number | 43 |
| Atomic weight | Нестабилен |
| Latin name | Technetium |
| English name | Technetium |
Electronic configuration of of Technetium
Tc: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5 → Tc3+:1s22s22p63s23p64s23d104p65s24d2
Same electronic configuration has an ion of Technetium +3 and Zr
The order of filling the shells with electrons of Technetium (Tc3+): 1s → 2s → 2p → 3s → 3p → 4s → 3d → 4p → 5s → 4d → 5p → 6s → 4f → 5d → 6p → 7s → 5f → 6d → 7p.
On the sub level ‘s’ there might be 2 electrons at most, on ‘p’ - up to 6, on ‘d’ - up to 10 and up to 14 on ‘f’
Technetium has 43 electrons, let's fill electronic layers in described order:
2 electrons on 1s-sub level
2 electrons on 2s-sub level
6 electrons on 2p-sub level
2 electrons on 3s-sub level
6 electrons on 3p-sub level
2 electrons on 4s-sub level
10 electrons on 3d-sub level
6 electrons on 4p-sub level
2 electrons on 5s-sub level
2 electrons on 4d-sub level
Oxidation state of Technetium
Atoms of Technetium in compounds have an oxidation state of 7, 6, 5, 4, 3, 2, 1, 0, -1, -3.
The oxidation state is the conditional charge of an atom in a compound: the bond in a molecule between atoms is based on the sharing of electrons, thus, if the atom’s charge virtually increases, then the oxidation state is negative (electrons carry a negative charge), if the charge decreases, then the oxidation state is positive.
Oxidation state of an ion Tc3+ = 3
Ions of Technetium
Valence of Tc3+
Atoms of Technetium in compounds have valence VII, VI, V, IV, III, II, I.
Valence of Technetium is an ability of an atom Tc to build chemical bounds. The valence is based on electronic configuration of atom: electrons participated in chemical bounds are known as valence electrons. In general the valence is:
The number of possible chemical bounds with other atoms
The valence has no sign.
Quantum numbers Tc 3+
Quantum numbers are defined by the last electron in configuration, for an ion Tc these numbers are N = 4, L = 2, Ml = -1, Ms = +½
Filling an electronic configuration (gif):
Result:
See all elements of the periodic table
Where is Tc in the periodic table?
