Which statement BEST explains why mercury is considered an element?
a. It is a metal that is a poor conductor of heat.
b. It is a metal that is naturally a liquid at room temperature.
c. It is a poison that is easily absorbed through unbroken skin.
d. It is a substance that cannot be chemically broken down any further. User: Niels Bohr had a theory about the structure of an atom. Which part of his theory has been proven wrong?
a. An atom is mostly empty space.
b. Atoms are ...
For the first Question, d. It is a substance that cannot be chemically broken down any further. For the second Question, Please right the whole options completely so that I can answer
