Which statements accurately describe trends found in the periodic table? Check all that apply.

- Henry Moseley established a periodic table that arranges the elements by atomic number.
- The atomic mass decreases from left to right on the periodic table.
- The atomic number increases from left to right on the periodic table.
- Nonmetals create a “staircase” down the periodic table.
- Metalloids have the characteristics of both metals and nonmetals.