If a small amount of antimony is added to germanium crystal
If a small amount of antimony is added to germanium crystal
the antimony becomes an acceptor atom
there will be more free electrons than holes in the semiconductor
its resistance is increased
it becomes a $p$-type semiconductor
Solution
When a small amount of antimony is added to germanium crystal, the crystal becomes $n$-type semiconductor because antimony is a pentavalent substrate. It excess free electrons.