Elements Answers

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.

How many protons are in an atom of copper? | How many electrons are in an atom of copper? | How many neutrons are in an atom of copper? Round your answer to the nearest whole number.

Atoms of elements in the same group have the same .

As you move from left to right on the periodic table, the atomic number .