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 selenate is MgSeO4. It is a compound formed by magnesium cations (Mg^2+) and selenate anions (SeO4^2-).
The most common selenium ion is selenite, which has a chemical formula of SeO3^2-. This ion is commonly found in nature in minerals and in aqueous solutions.
None. The Se2- ion is isoelectronic with Krypton.
A selenium ion with 36 electrons would have a charge of +2 and would be called a selenide ion (Se2-).
Formula: Se2-
Se2-
The chemical formula SeH2 represents the compound selenium hydride.
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 selenate is MgSeO4. It is a compound formed by magnesium cations (Mg^2+) and selenate anions (SeO4^2-).
Selenium sulfide.
The most common selenium ion is selenite, which has a chemical formula of SeO3^2-. This ion is commonly found in nature in minerals and in aqueous solutions.