What is the pi of 80,000 and 400000

Which is a characteristic of mixtures?

What is the formula that this ionic compounds could form sr2+p3-o2-

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?