Question

Are all of the elements in Groups 13 through 15 metals?

Answer 1

here is the answer of your question

the groups 13 14 and 15 contain metals nonmetals and metalloids

some examples are

metals:aluminium, gallium, indium ,tin ,lead etc

non metals:carbon nitrogen Phosphorus oxygen sulphur etc.

metalloids:Boron Silicon Germanium arsenic antimony etc

hope this will help you