C. Medusa. Everything else on the list is a part of another creature, medusa is the only cnidarian here!
Answer: A. 2SO3(g)⇒2SO2(g)+O2(g). butt i mean give me 5 more points
Explanation:
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 .
