How many energy levels would you expect an atom of cesium (Cs) to have?

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k