Ion Y³⁺

Symbol	Y3+
Number	39
Atomic weight	88.9058400
Latin name	Yttrium
English name	Yttrium

How to build an electronic configuration by yourself? See link

Electronic configuration of of Yttrium

Y: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹ → Y³⁺:1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s⁰4d⁰

Same electronic configuration has an ion of Yttrium +3 and As^-3, Se^-2, Br^-1, Kr, Rb⁺¹, Sr⁺², Zr⁺⁴, Tc⁺⁷

The order of filling the shells with electrons of Yttrium (Y³⁺): 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’

Yttrium has 39 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

Oxidation state of Yttrium

Atoms of Yttrium in compounds have an oxidation state of 3, 2.

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 Y³⁺ = 3

Ions of Yttrium

Valence of Y³⁺

Atoms of Yttrium in compounds have valence III, II.

Valence of Yttrium is an ability of an atom Y 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 Y ³⁺

Quantum numbers are defined by the last electron in configuration, for an ion Y these numbers are N = 4, L = 1, M_l = 1, M_s = -½

Filling an electronic configuration (gif):



Result: