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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.

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Answer:

A.)Henry Moseley established a periodic table that arranges the elements by atomic number.

C.)The atomic number increases from left to right on the periodic table.

E.)Metalloids have the characteristics of both metals and nonmetals.

Explanation:

Direct notes from edge:

-Metalloids have characteristics of both metals and nonmetals

-As you move left to right, the atomic number of each element increases by 1

-Henry Moseley Arranged elements in order of increasing atomic number

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