Ion As5+
| Symbol | As5+ |
| Number | 33 |
| Atomic weight | 74.9215950 |
| Latin name | Arsenicum |
| English name | Arsenic |
Electronic configuration of of Arsenic
As: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 → As5+:1s22s22p63s23p64s23d84p0
Same electronic configuration has an ion of Arsenic +5 and Mn-3, Fe-2, Co-1, Ni, Zn+2, Ga+3, Ge+4, Se+6, Br+7
The order of filling the shells with electrons of Arsenic (As5+): 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’
Arsenic has 33 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
8 electrons on 3d-sub level
Oxidation state of Arsenic
Atoms of Arsenic in compounds have an oxidation state of 5, 3, 2, -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 As5+ = 5
Ions of Arsenic
Valence of As5+
Atoms of Arsenic in compounds have valence V, III, II.
Valence of Arsenic is an ability of an atom As 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 As 5+
Quantum numbers are defined by the last electron in configuration, for an ion As these numbers are N = 3, L = 2, Ml = 0, Ms = -½
Filling an electronic configuration (gif):
Result:
See all elements of the periodic table
Where is As in the periodic table?
