What is the Chemical formula for lithium and selenium?

Which Nordic nation has hot springs and geysers? Honeybee venom is a solution that contains formic acid which gives the venom an approximate pH of 5.0 which substance is more acidic than honeybee venom? Which three acids are uses in fertilizers? What rhymes with carbon dioxide? What is the difference between minocycline 100 mg and minocycline hcl 100 mg? What is one reason that CO2H is normally written -COOH instead? Which is stronger base bleach or amonia? What type of bond does KF have? What is the color of vanadium? When you burn hydrogen and oxygen what molecule is created? What method would you use to separate sand and water? Is a bubble bath a chemical reactions? What does Hg stand for in chemistry? What is the chemical compound of diamonds? Why is chlorine very reactive and argon isn't? How much does grass seed cost per pound? What is the mass number of the isotope of boron possessing 6 neutrons? What is the definition of Analytical molarity? What part of the atom does chemical reactons occur? HOW DO YOU name Se2?

What is the Chemical formula for lithium and selenium?