The energy band formed by a series of energy levels containing valence electrons is known as valence band. At 0 K, the electrons fills the energy levels in valence band starting from lowest one. (i) This band is always fulfil by electron. (ii) This is the band of maximum energy. (iii) Electrons are not capable of gaining energy from external electric field. (iv) No flow of current due to such electrons. (v) The highest energy level which can be occupied by an electron in valence band at 0 K is called fermi level.
Answers
mobin
(i) This band is always fulfil by electron.
(ii) This is the band of maximum energy.
(iii) Electrons are not capable of gaining energy from external electric field.
(iv) No flow of current due to such electrons.
(v) The highest energy level which can be occupied by an electron in valence band at 0 K is called fermi level.