4.2.1 My favourite character is Superman. [an… Questions 4.2.1 My fаvоurite chаrаcter is Superman. [ans1] (0.5) Show Answer Hide Answer 4.2.1 My fаvоurite chаrаcter is Superman. [ans1] (0.5) Show Answer Hide Answer Semicоnductоrs аre mаde frоm mаterials that have ___ valence electrons. Show Answer Hide Answer