Why doesn't your consist of 365 days and a day of 24 hours

As you move from right to left on the periodic table the atomic radius fill in the blank

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density