What do the numbers listed for an element on the periodic table represent?

a.) the number with a lower value is the number of protons and the number with a higher value is the mass.
b.) the number with a lower value is the number of neutrons and the number with a higher value is the number of protons.
c.) the number with a higher value is the mass and the number with a lower value is the combined number of protons and electrons.
d.) the number with a higher value is the number of protons and the number with a lower value is the number of neutrons.

The number with a lower value is the number of protons and the number with a higher value is the mass.

The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties.

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

i believe it is 40–40–20%

explanation:

i don,t know so just answer mine