Can someone help me balance these chemical equations? 1. CuF2 + Mg > MgF2 + Cu3
2. Na + H2O > NaOH + H2
3. KBr + Cl2 > KCl + Br2

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?

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

Which suspect most likely committed the robbery and how do you know