In the modern quantum-based atomic theory, what is the name given to a particular space around the nucleus in which an electron moves

In an energy pyramid, which level has the most available energy?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ