The chemical formula for sodium selenide is Na2Se.
The ionic formula for aluminum is Al3+ and for selenium is Se2-. When these two ions combine, the formula for the resulting ionic compound is Al2Se3.
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
The most common Selenium ion is Se2- the selenide ion. It is in the same group as oxygen and its most common ion in the oxide ion O2-.
None. The Se2- ion is isoelectronic with Krypton.
When selenium gains two electrons, it becomes the selenide ion.
Formula: Se2-
Se2-
Hydrogen Selenide and it is extremely toxic when inhaled.
A selenide contain the anion Se(2-).
isoelectronic
c. Rb plus. Kr has 36 electrons, the same as Se2-, As3+, Sr2+, and Br-. Rb plus has 35 electrons, which is not isoelectronic with Kr.
The ionic formula for aluminum is Al3+ and for selenium is Se2-. When these two ions combine, the formula for the resulting ionic compound is Al2Se3.
The formula for scandium III selenide is Sc2Se3. This compound consists of two scandium ions (Sc3+) and three selenide ions (Se2-).
The Se2- ion has the largest radius because it has more electrons than As3-, leading to increased electron-electron repulsion and a larger atomic radius.
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
SELENIDE
The most common Selenium ion is Se2- the selenide ion. It is in the same group as oxygen and its most common ion in the oxide ion O2-.