Fermi energy level for an electron is
(a) a possible energy value that an electron can have in free state
(b) an unfilled energy level that can be occupied by two electrons of opposite spins
(c) lowest energy value possible for a bound electron
(d) highest occupied energy level at absolute zero kelvin upto which every possible energy levels are filled
Correct option is (d) highest occupied energy level at absolute zero kelvin upto which every possible energy levels are filled
Fermi energy level is last filled energy level at zero kelvin.