You are likely to see a connotation used in both advertisement and also some university lectures. If only one answer is permitted, B is the best answer.
Answer:
For the first one is for earthquakes and the second one is “add toothpicks diagonal across the sides”
Group 13-17 contains metalloids. Boron, Silicon germanium, Arsenic, Antimony, Tellurium and Polonium are considered metalloids. They have properties of both metal and non metal. Some of the element are good semi-conductors .
