Ion Cl- (Minus one)
| Symbol | Cl- |
| Number | 17 |
| Atomic weight | 35.4460000 |
| Latin name | Chlorum |
| English name | Chlorine |
Electronic configuration of of Chlorine
Cl: 1s2 2s2 2p6 3s2 3p5 → Cl-:1s22s22p63s23p6
Same electronic configuration has an ion of Chlorine -1 and Si-4, P-3, S-2, Ar, K+1, Ca+2, Sc+3, Ti+4, V+5, Mn+7
The order of filling the shells with electrons of Chlorine (Cl-): 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’
Chlorine has 17 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
Oxidation state of Chlorine
Atoms of Chlorine in compounds have an oxidation state of 6, 5, 4, 3, 2, 1, 0, -1.
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 Cl- = -1
Ions of Chlorine
Valence of Cl-
Atoms of Chlorine in compounds have valence VI, V, IV, III, II, I.
Valence of Chlorine is an ability of an atom Cl 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 Cl 1-
Quantum numbers are defined by the last electron in configuration, for an ion Cl these numbers are N = 3, L = 1, Ml = 1, Ms = -½
Filling an electronic configuration (gif):
Result:
See all elements of the periodic table
Where is Cl in the periodic table?
