SeO2
Germanium is an element, and as such does not have a chemical formula per se. Rather is has a chemical symbol, which is Ge.
Formula: Se8
The chemical formula for aluminum selenide is Al2Se3. This is an ionic compound, so it is shown with 2 Al 2+ + 3 [Se] 2-. Around the Se are dot pairs on all four sides showing the complete transfer of electrons from the Al to the Se atoms.
Ca+2 Se-2 -----> these are the ions and their chargesCalcium selenide (CaSe)-------> the charges must equal zero; since they already do, there is one ion of each in the compound.
SeBr4
Germanium is an element, and as such does not have a chemical formula per se. Rather is has a chemical symbol, which is Ge.
Formula: Se8
Diamond is a form of carbon, an allotrope, which has the chemical symbol C and doesn't have a formula per se. That's it. Just "C". It is pure carbon.
The chemical formula for element selenium is indicated by se. Native selenium is a rare mineral which does not usually forms good crystals. Hence it is used in the manufacture of specimens
The chemical formula for aluminum selenide is Al2Se3. This is an ionic compound, so it is shown with 2 Al 2+ + 3 [Se] 2-. Around the Se are dot pairs on all four sides showing the complete transfer of electrons from the Al to the Se atoms.
Se is the symbol for Selenium.
Selenium
se
Ca+2 Se-2 -----> these are the ions and their chargesCalcium selenide (CaSe)-------> the charges must equal zero; since they already do, there is one ion of each in the compound.
Selenium
The symbol for selenium is Se.
SeBr4