Which electron configuration represents the
electrons of an atom in an excited state?
(1) 2-2
(3) 2-8
(2) 2-2-1
(4) 2-8-1

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.