Ion H- (Minus one)
| Symbol | H- |
| Number | 1 |
| Atomic weight | 1.0078400 |
| Latin name | Hydrogenium |
| English name | Hydrogen |
Electronic configuration of of Hydrogen
H: 1s1 → H-:1s2
Same electronic configuration has an ion of Hydrogen -1 and He, Li+1, Be+2, B+3, C+4, N+5
The order of filling the shells with electrons of Hydrogen (H-): 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’
Hydrogen has 1 electron, let's fill electronic layers in described order:
2 electrons on 1s-sub level
Oxidation state of Hydrogen
Atoms of Hydrogen in compounds have an oxidation state of 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 H- = -1
Ions of Hydrogen
Valence of H-
Atoms of Hydrogen in compounds have valence I.
Valence of Hydrogen is an ability of an atom H 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 H 1-
Quantum numbers are defined by the last electron in configuration, for an ion H these numbers are N = 1, L = 0, Ml = 1, Ms = -½
Filling an electronic configuration (gif):
Result:
See all elements of the periodic table
Where is H in the periodic table?
