Final answer:
Both electronegativity and atomic radius decrease from bottom to top and from left to right on the periodic table.
Step-by-step explanation:
The correct statement about periodic trends is:
Both electronegativity and atomic radius decrease from bottom to top and from left to right on the periodic table.
Electronegativity refers to the tendency of atoms to attract electrons, while atomic radius is the size of the atom. Both of these properties follow a pattern of decreasing from bottom to top and from left to right on the periodic table.