3. Section Outline: Atomic Mass (Pick 2) (1 Point) All atoms

Last updated: 7/31/2022

3. Section Outline: Atomic Mass (Pick 2) (1 Point) All atoms of the same element have approximately the same mass. Mendeleev's table showed which elements would react with chlorine. The average atomic mass is often expressed as a decimal number. Mendeleev left gaps in the periodic table for undiscovered elements.