Question

the periodic table displays

a. only the important elements that exist in the world.
b. all of the known elements that exist in the world today.
c. all of the known compounds that exist in the world today.
d. only the important compounds that exist in the world.

Explanation:

The periodic table is a tabular display of all the known chemical elements, organized by their atomic number, electron - configuration, and recurring chemical properties. It does not display compounds. All known elements are included, not just the important ones.

Answer:

B. all of the known elements that exist in the world today.