What are isotopes?
What evidence do line emission spectra provide for the existence of energy levels in atoms?
The Aufbau principle states that:
Electrons have a discrete (fixed) amount of energy.
The lowest available energy state of an electron is called the:
When atoms receive energy, the electrons:
Energy levels for an electron in a hydrogen atom are
What is the electron configuration of an Iron atom (56-Fe)?
How many full p-orbitals are there in an atom of Bromine?
How many orbitals are there in the n = 3 energy level of an atom?