False
explanation
All of the elements with atomic numbers 1 to 92 can be found in nature, have stable or very long half-life isotopes, and are created as common products of the decay of uranium and thorium.
I know for number 4 the answer is c, sorry I can't help with the others.
25 sugar because the mass should be equal on both sides
Answer:
its because fibrinogen is a chemical substance that builds up at the wound and gets hard by the action of air to prevent bleeding
Main group elements
transition metals
lanthanides
actindes.