The element used to increase number of free electrons in the semi-conductor belongs to:A. 4th Group B. 5th GroupC. 2nd GroupD. 3rd Group 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Website Label {} [+] Name* Email* Website 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments