Ion Si2+
Symbol | Si2+ |
Number | 14 |
Atomic weight | 28.0840000 |
Latin name | Silicium |
English name | Silicon |
Electronic configuration of of Silicon
Si: 1s2 2s2 2p6 3s2 3p2 → Si2+:1s22s22p63s23p0
Same electronic configuration has an ion of Silicon +2 and Na-1, Mg, Al+1, P+3, S+4, Cl+5
The order of filling the shells with electrons of Silicon (Si2+): 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’
Silicon has 14 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
Oxidation state of Silicon
Atoms of Silicon in compounds have an oxidation state of 4, 3, 2, 1, -1, -2, -4.
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 Si2+ = 2
Ions of Silicon
Valence of Si2+
Atoms of Silicon in compounds have valence IV, III, II, I.
Valence of Silicon is an ability of an atom Si 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 Si 2+
Quantum numbers are defined by the last electron in configuration, for an ion Si these numbers are N = 3, L = 0, Ml = 1, Ms = -½
Filling an electronic configuration (gif):Result:
See all elements of the periodic table
Where is Si in the periodic table?