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What compound is formed from selenium and chlorine?
Selenium chloride (SeCl4) is the compound formed from selenium and chlorine. It is a yellowish-red liquid with a pungent odor.
What observable characteristics does selenium have?
Selenium is a nonmetal element that appears as a gray, metallic-looking solid. It can exist in different forms, such as the red allotrope, which is an amorphous powder. Selenium has a noticeable odor that resembles that of radishes or rotten horseradish.
What chemical do you get mixing hydrogen and selenium?
Mixing hydrogen and selenium typically results in the formation of hydrogen selenide, or hydrogen selenide gas (H2Se). This compound is a colorless and highly toxic gas with a foul odor.
Is selenium a colorless odorless gas with low chemical reactivity?
No. It's not colorless. Because it's right below sulfur on the periodic table and sulfur is foul-smelling, it probably also has an odor. Some selenium compounds are indeed highly raunchy; hydrogen selenide is said to be the worst-smelling substance in the universe. It's not a gas either. And it's definitely got chemical reactivity. It's not potassium or fluorine, but it's not neon either.
How many moles of selenium in selenium tetra-fluoride?
There is one mole of selenium in one mole of selenium tetrafluoride, as the formula for selenium tetrafluoride is SeF4. Therefore, there is 1 mole of selenium in 1 mole of selenium tetrafluoride.
