The chemical formula for sodium selenide is Na2Se.
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
Se2- 1s22s22p63s23p64s23d104p6
Barium Selenide ---> Ba2+Se2- ---> BaSe
None. The Se2- ion is isoelectronic with Krypton.
The element (noble gas) Krypton
Formula: Se2-
Hydrogen Selenide and it is extremely toxic when inhaled.
Se2-
A selenide contain the anion Se(2-).
isoelectronic
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
As3 plus. It is As3-
Se2- is incorrect the answer is As 3-
SELENIDE
The oxidation states of selenium are: -2, +2, +4, +6.
Se2- 1s22s22p63s23p64s23d104p6
Barium Selenide ---> Ba2+Se2- ---> BaSe